865493523 has 24 divisors (see below), whose sum is σ = 1259119680. Its totient is φ = 572877360.

The previous prime is 865493507. The next prime is 865493533. The reversal of 865493523 is 325394568.

865493523 is a `hidden beast` number, since 86 + 5 + 49 + 3 + 523 = 666.

It is not a de Polignac number, because 865493523 - 2⁴ = 865493507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (865493533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1066788 + ... + 1067598.

It is an arithmetic number, because the mean of its divisors is an integer number (52463320).

Almost surely, 2^865493523 is an apocalyptic number.

865493523 is a deficient number, since it is larger than the sum of its proper divisors (393626157).

865493523 is a wasteful number, since it uses less digits than its factorization.

865493523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519 (or 1516 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 865493523 is about 29419.2712860125. The cubic root of 865493523 is about 952.9891161841.

The spelling of 865493523 in words is "eight hundred sixty-five million, four hundred ninety-three thousand, five hundred twenty-three".