690659692801 has 32 divisors (see below), whose sum is σ = 807127711488. Its totient is φ = 585119631360.

The previous prime is 690659692787. The next prime is 690659692847. The reversal of 690659692801 is 108296956096.

It is a cyclic number.

It is not a de Polignac number, because 690659692801 - 2¹³ = 690659684609 is a prime.

It is a super-2 number, since 2×690659692801² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 690659692801.

It is not an unprimeable number, because it can be changed into a prime (690659492801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20524476 + ... + 20558098.

It is an arithmetic number, because the mean of its divisors is an integer number (25222740984).

Almost surely, 2^690659692801 is an apocalyptic number.

It is an amenable number.

690659692801 is a deficient number, since it is larger than the sum of its proper divisors (116468018687).

690659692801 is a wasteful number, since it uses less digits than its factorization.

690659692801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35961.

The product of its (nonzero) digits is 12597120, while the sum is 61.

The spelling of 690659692801 in words is "six hundred ninety billion, six hundred fifty-nine million, six hundred ninety-two thousand, eight hundred one".