690807536 has 20 divisors (see below), whose sum is σ = 1346969592. Its totient is φ = 343202496.

The previous prime is 690807517. The next prime is 690807539. The reversal of 690807536 is 635708096.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690807539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134990 + ... + 140013.

Almost surely, 2^690807536 is an apocalyptic number.

It is an amenable number.

690807536 is a deficient number, since it is larger than the sum of its proper divisors (656162056).

690807536 is a wasteful number, since it uses less digits than its factorization.

690807536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275168 (or 275162 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 690807536 is about 26283.2177634322. The cubic root of 690807536 is about 884.0001842714. Note that the first 3 decimals are identical.

The spelling of 690807536 in words is "six hundred ninety million, eight hundred seven thousand, five hundred thirty-six".