690530933855 has 32 divisors (see below), whose sum is σ = 955029035520. Its totient is φ = 469507927680.

The previous prime is 690530933831. The next prime is 690530933857. The reversal of 690530933855 is 558339035096.

It is not a de Polignac number, because 690530933855 - 2³⁴ = 673351064671 is a prime.

It is a super-2 number, since 2×690530933855² (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 690530933855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690530933857) 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, 3788360 + ... + 3966450.

It is an arithmetic number, because the mean of its divisors is an integer number (29844657360).

Almost surely, 2^690530933855 is an apocalyptic number.

690530933855 is a deficient number, since it is larger than the sum of its proper divisors (264498101665).

690530933855 is a wasteful number, since it uses less digits than its factorization.

690530933855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179039.

The product of its (nonzero) digits is 13122000, while the sum is 56.

The spelling of 690530933855 in words is "six hundred ninety billion, five hundred thirty million, nine hundred thirty-three thousand, eight hundred fifty-five".