343636665690 has 128 divisors (see below), whose sum is σ = 851582833920. Its totient is φ = 88691097600.

The previous prime is 343636665683. The next prime is 343636665727. The reversal of 343636665690 is 96566636343.

It is a happy number.

343636665690 is a nontrivial binomial coefficient, being equal to C(829020, 2).

It is a super-2 number, since 2×343636665690² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 343636665690.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 87459646 + ... + 87463574.

It is an arithmetic number, because the mean of its divisors is an integer number (6652990890).

Almost surely, 2^343636665690 is an apocalyptic number.

343636665690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

343636665690 is the 829019-th triangular number and also the 414510-th hexagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343636665690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (425791416960).

343636665690 is an abundant number, since it is smaller than the sum of its proper divisors (507946168230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

343636665690 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (343636665689) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (4528).

343636665690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528.

The product of its (nonzero) digits is 37791360, while the sum is 57.

The spelling of 343636665690 in words is "three hundred forty-three billion, six hundred thirty-six million, six hundred sixty-five thousand, six hundred ninety".