65117237 has 4 divisors (see below), whose sum is σ = 68544480. Its totient is φ = 61689996.

The previous prime is 65117207. The next prime is 65117243. The reversal of 65117237 is 73271156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65117237 - 2⁸ = 65116981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65117207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1713593 + ... + 1713630.

It is an arithmetic number, because the mean of its divisors is an integer number (17136120).

Almost surely, 2^65117237 is an apocalyptic number.

It is an amenable number.

65117237 is a deficient number, since it is larger than the sum of its proper divisors (3427243).

65117237 is a wasteful number, since it uses less digits than its factorization.

65117237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3427242.

The product of its digits is 8820, while the sum is 32.

The square root of 65117237 is about 8069.5252028852. The cubic root of 65117237 is about 402.3141628896.

The spelling of 65117237 in words is "sixty-five million, one hundred seventeen thousand, two hundred thirty-seven".