690719006646 has 48 divisors (see below), whose sum is σ = 1515494904768. Its totient is φ = 227338704000.

The previous prime is 690719006641. The next prime is 690719006687. The reversal of 690719006646 is 646600917096.

It is a super-2 number, since 2×690719006646² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 690719006592 and 690719006601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690719006641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149586 + ... + 1184826.

It is an arithmetic number, because the mean of its divisors is an integer number (31572810516).

Almost surely, 2^690719006646 is an apocalyptic number.

690719006646 is an abundant number, since it is smaller than the sum of its proper divisors (824775898122).

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

690719006646 is a wasteful number, since it uses less digits than its factorization.

690719006646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035717 (or 1035714 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 690719006646 in words is "six hundred ninety billion, seven hundred nineteen million, six thousand, six hundred forty-six".