77536340 has 96 divisors (see below), whose sum is σ = 198481920. Its totient is φ = 24852096.

The previous prime is 77536339. The next prime is 77536379. The reversal of 77536340 is 4363577.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 77536340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 273839 + ... + 274121.

It is an arithmetic number, because the mean of its divisors is an integer number (2067520).

Almost surely, 2^77536340 is an apocalyptic number.

77536340 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77536340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99240960).

77536340 is an abundant number, since it is smaller than the sum of its proper divisors (120945580).

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

77536340 is a wasteful number, since it uses less digits than its factorization.

77536340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 35.

The square root of 77536340 is about 8805.4721622409. The cubic root of 77536340 is about 426.4175778628.

The spelling of 77536340 in words is "seventy-seven million, five hundred thirty-six thousand, three hundred forty".