652491 has 12 divisors (see below), whose sum is σ = 1077232. Its totient is φ = 372816.

The previous prime is 652453. The next prime is 652493. The reversal of 652491 is 194256.

652491 is a `hidden beast` number, since 652 + 4 + 9 + 1 = 666.

It is not a de Polignac number, because 652491 - 2¹⁴ = 636107 is a prime.

It is a super-3 number, since 3×652491³ = 833383373594420313, which contains 333 as substring.

It is a Duffinian number.

652491 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 652491.

It is not an unprimeable number, because it can be changed into a prime (652493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5116 + ... + 5241.

2⁶⁵²⁴⁹¹ is an apocalyptic number.

652491 is a deficient number, since it is larger than the sum of its proper divisors (424741).

652491 is a wasteful number, since it uses less digits than its factorization.

652491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10370 (or 10367 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 652491 is about 807.7691501908. The cubic root of 652491 is about 86.7344259706.

It can be divided in two parts, 65 and 2491, that added together give a triangular number (2556 = T₇₁).

The spelling of 652491 in words is "six hundred fifty-two thousand, four hundred ninety-one".