690113457 has 36 divisors (see below), whose sum is σ = 1110827172. Its totient is φ = 412473600.

The previous prime is 690113443. The next prime is 690113461. The reversal of 690113457 is 754311096.

690113457 is a `hidden beast` number, since 6 + 90 + 113 + 457 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 485937936 + 204175521 = 22044^2 + 14289^2 .

It is not a de Polignac number, because 690113457 - 2⁶ = 690113393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690113257) 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 35 ways as a sum of consecutive naturals, for example, 75157 + ... + 83837.

Almost surely, 2^690113457 is an apocalyptic number.

It is an amenable number.

690113457 is a deficient number, since it is larger than the sum of its proper divisors (420713715).

690113457 is a wasteful number, since it uses less digits than its factorization.

690113457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8782 (or 8768 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 690113457 is about 26270.0106014444. The cubic root of 690113457 is about 883.7040228770.

The spelling of 690113457 in words is "six hundred ninety million, one hundred thirteen thousand, four hundred fifty-seven".