806490531 has 72 divisors (see below), whose sum is σ = 1495183872. Its totient is φ = 409860000.

The previous prime is 806490527. The next prime is 806490563. The reversal of 806490531 is 135094608.

806490531 is a `hidden beast` number, since 8 + 0 + 649 + 0 + 5 + 3 + 1 = 666.

It is not a de Polignac number, because 806490531 - 2² = 806490527 is a prime.

It is a super-2 number, since 2×806490531² = 1300853953185323922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806490521) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 357156 + ... + 359406.

Almost surely, 2^806490531 is an apocalyptic number.

806490531 is a deficient number, since it is larger than the sum of its proper divisors (688693341).

806490531 is a wasteful number, since it uses less digits than its factorization.

806490531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333 (or 2319 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 806490531 is about 28398.7769278890. The cubic root of 806490531 is about 930.8215390607.

The spelling of 806490531 in words is "eight hundred six million, four hundred ninety thousand, five hundred thirty-one".