690004698426 has 24 divisors (see below), whose sum is σ = 1509524845920. Its totient is φ = 227768540616.

The previous prime is 690004698419. The next prime is 690004698433. The reversal of 690004698426 is 624896400096.

690004698426 is a `hidden beast` number, since 6 + 90 + 0 + 0 + 46 + 98 + 426 = 666.

It is an interprime number because it is at equal distance from previous prime (690004698419) and next prime (690004698433).

It is a super-2 number, since 2×690004698426² (a number of 24 digits) contains 22 as substring.

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 186083556 + ... + 186087263.

It is an arithmetic number, because the mean of its divisors is an integer number (62896868580).

Almost surely, 2^690004698426 is an apocalyptic number.

690004698426 is an abundant number, since it is smaller than the sum of its proper divisors (819520147494).

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

690004698426 is a wasteful number, since it uses less digits than its factorization.

690004698426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372170930 (or 372170927 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 690004698426 in words is "six hundred ninety billion, four million, six hundred ninety-eight thousand, four hundred twenty-six".