64165331 has 8 divisors (see below), whose sum is σ = 68513280. Its totient is φ = 59947272.

The previous prime is 64165307. The next prime is 64165349. The reversal of 64165331 is 13356146.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64165331 - 2¹⁴ = 64148947 is a prime.

It is a super-2 number, since 2×64165331² = 8234379404679122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64165294 and 64165303.

It is not an unprimeable number, because it can be changed into a prime (64168331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31451 + ... + 33428.

It is an arithmetic number, because the mean of its divisors is an integer number (8564160).

Almost surely, 2^64165331 is an apocalyptic number.

64165331 is a deficient number, since it is larger than the sum of its proper divisors (4347949).

64165331 is a wasteful number, since it uses less digits than its factorization.

64165331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64945.

The product of its digits is 6480, while the sum is 29.

The square root of 64165331 is about 8010.3265226831. The cubic root of 64165331 is about 400.3441434117.

The spelling of 64165331 in words is "sixty-four million, one hundred sixty-five thousand, three hundred thirty-one".