690355562138 has 32 divisors (see below), whose sum is σ = 1196297631360. Its totient is φ = 295296424960.

The previous prime is 690355562137. The next prime is 690355562159. The reversal of 690355562138 is 831265553096.

690355562138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×690355562138³ (a number of 36 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 690355562138.

It is not an unprimeable number, because it can be changed into a prime (690355562131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2517170 + ... + 2777922.

It is an arithmetic number, because the mean of its divisors is an integer number (37384300980).

Almost surely, 2^690355562138 is an apocalyptic number.

690355562138 is a deficient number, since it is larger than the sum of its proper divisors (505942069222).

690355562138 is a wasteful number, since it uses less digits than its factorization.

690355562138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267862.

The product of its (nonzero) digits is 5832000, while the sum is 53.

The spelling of 690355562138 in words is "six hundred ninety billion, three hundred fifty-five million, five hundred sixty-two thousand, one hundred thirty-eight".