65615252 has 12 divisors (see below), whose sum is σ = 117627636. Its totient is φ = 32007360.

The previous prime is 65615237. The next prime is 65615273. The reversal of 65615252 is 25251656.

It can be written as a sum of positive squares in 2 ways, for example, as 5180176 + 60435076 = 2276^2 + 7774^2 .

It is a super-2 number, since 2×65615252² = 8610722590047008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199883 + ... + 200210.

It is an arithmetic number, because the mean of its divisors is an integer number (9802303).

Almost surely, 2^65615252 is an apocalyptic number.

It is an amenable number.

65615252 is a deficient number, since it is larger than the sum of its proper divisors (52012384).

65615252 is a wasteful number, since it uses less digits than its factorization.

65615252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400138 (or 400136 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 65615252 is about 8100.3241910432. The cubic root of 65615252 is about 403.3371888315.

The spelling of 65615252 in words is "sixty-five million, six hundred fifteen thousand, two hundred fifty-two".