65253645 has 48 divisors (see below), whose sum is σ = 119912832. Its totient is φ = 32757120.

The previous prime is 65253611. The next prime is 65253677. The reversal of 65253645 is 54635256.

It is a happy number.

65253645 is a `hidden beast` number, since 6 + 5 + 2 + 5 + 3 + 645 = 666.

It is not a de Polignac number, because 65253645 - 2¹⁵ = 65220877 is a prime.

It is a super-3 number, since 3×65253645³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68875 + ... + 69815.

It is an arithmetic number, because the mean of its divisors is an integer number (2498184).

Almost surely, 2^65253645 is an apocalyptic number.

It is an amenable number.

65253645 is a deficient number, since it is larger than the sum of its proper divisors (54659187).

65253645 is a wasteful number, since it uses less digits than its factorization.

65253645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042 (or 1039 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 65253645 is about 8077.9728273868. The cubic root of 65253645 is about 402.5948903753.

The spelling of 65253645 in words is "sixty-five million, two hundred fifty-three thousand, six hundred forty-five".