65238537 has 32 divisors (see below), whose sum is σ = 113363712. Its totient is φ = 32385024.

The previous prime is 65238529. The next prime is 65238553. The reversal of 65238537 is 73583256.

It is not a de Polignac number, because 65238537 - 2³ = 65238529 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 65238495 and 65238504.

It is not an unprimeable number, because it can be changed into a prime (65238517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2388 + ... + 11669.

It is an arithmetic number, because the mean of its divisors is an integer number (3542616).

Almost surely, 2^65238537 is an apocalyptic number.

It is an amenable number.

65238537 is a deficient number, since it is larger than the sum of its proper divisors (48125175).

65238537 is a wasteful number, since it uses less digits than its factorization.

65238537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14097.

The product of its digits is 151200, while the sum is 39.

The square root of 65238537 is about 8077.0376376491. The cubic root of 65238537 is about 402.5638174083.

The spelling of 65238537 in words is "sixty-five million, two hundred thirty-eight thousand, five hundred thirty-seven".