690056361 has 8 divisors (see below), whose sum is σ = 1022305760. Its totient is φ = 460037556.

The previous prime is 690056359. The next prime is 690056369. The reversal of 690056361 is 163650096.

690056361 is a `hidden beast` number, since 6 + 90 + 0 + 563 + 6 + 1 = 666.

It is not a de Polignac number, because 690056361 - 2¹ = 690056359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690056369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12778795 + ... + 12778848.

It is an arithmetic number, because the mean of its divisors is an integer number (127788220).

Almost surely, 2^690056361 is an apocalyptic number.

It is an amenable number.

690056361 is a deficient number, since it is larger than the sum of its proper divisors (332249399).

690056361 is a wasteful number, since it uses less digits than its factorization.

690056361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25557652 (or 25557646 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 690056361 is about 26268.9238645210. The cubic root of 690056361 is about 883.6796513500.

The spelling of 690056361 in words is "six hundred ninety million, fifty-six thousand, three hundred sixty-one".