535680657 has 12 divisors (see below), whose sum is σ = 781739140. Its totient is φ = 353438208.

The previous prime is 535680637. The next prime is 535680679. The reversal of 535680657 is 756086535.

535680657 is a `hidden beast` number, since 535 + 68 + 0 + 6 + 57 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 105698961 + 429981696 = 10281^2 + 20736^2 .

It is a de Polignac number, because none of the positive numbers 2^k-535680657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (535680637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305932 + ... + 307677.

Almost surely, 2^535680657 is an apocalyptic number.

It is an amenable number.

535680657 is a deficient number, since it is larger than the sum of its proper divisors (246058483).

535680657 is a wasteful number, since it uses less digits than its factorization.

535680657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613712 (or 613709 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The square root of 535680657 is about 23144.7760196551. The cubic root of 535680657 is about 812.1482662800.

The spelling of 535680657 in words is "five hundred thirty-five million, six hundred eighty thousand, six hundred fifty-seven".