653942502 has 48 divisors (see below), whose sum is σ = 1508637312. Its totient is φ = 204007680.

The previous prime is 653942501. The next prime is 653942507. The reversal of 653942502 is 205249356.

653942502 is a `hidden beast` number, since 65 + 3 + 94 + 2 + 502 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653942501) 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 23 ways as a sum of consecutive naturals, for example, 49483 + ... + 61289.

It is an arithmetic number, because the mean of its divisors is an integer number (31429944).

Almost surely, 2^653942502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 653942502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (754318656).

653942502 is an abundant number, since it is smaller than the sum of its proper divisors (854694810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

653942502 is a wasteful number, since it uses less digits than its factorization.

653942502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12013 (or 12010 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 653942502 is about 25572.2995055196. The cubic root of 653942502 is about 867.9869350041.

It can be divided in two parts, 65394 and 2502, that added together give a triangular number (67896 = T₃₆₈).

The spelling of 653942502 in words is "six hundred fifty-three million, nine hundred forty-two thousand, five hundred two".