690760797688 has 32 divisors (see below), whose sum is σ = 1394997206400. Its totient is φ = 318768847488.

The previous prime is 690760797677. The next prime is 690760797697. The reversal of 690760797688 is 886797067096.

It is a super-2 number, since 2×690760797688² (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 690760797688.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309753 + ... + 1215511.

It is an arithmetic number, because the mean of its divisors is an integer number (43593662700).

Almost surely, 2^690760797688 is an apocalyptic number.

It is an amenable number.

690760797688 is an abundant number, since it is smaller than the sum of its proper divisors (704236408712).

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

690760797688 is a wasteful number, since it uses less digits than its factorization.

690760797688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913111 (or 913107 counting only the distinct ones).

The product of its (nonzero) digits is 384072192, while the sum is 73.

The spelling of 690760797688 in words is "six hundred ninety billion, seven hundred sixty million, seven hundred ninety-seven thousand, six hundred eighty-eight".