64145361 has 48 divisors (see below), whose sum is σ = 105719040. Its totient is φ = 34433280.

The previous prime is 64145359. The next prime is 64145377. The reversal of 64145361 is 16354146.

It is not a de Polignac number, because 64145361 - 2¹ = 64145359 is a prime.

It is a super-2 number, since 2×64145361² = 8229254675640642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64145351) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 174600 + ... + 174966.

It is an arithmetic number, because the mean of its divisors is an integer number (2202480).

Almost surely, 2^64145361 is an apocalyptic number.

It is an amenable number.

64145361 is a deficient number, since it is larger than the sum of its proper divisors (41573679).

64145361 is a wasteful number, since it uses less digits than its factorization.

64145361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 447 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 64145361 is about 8009.0799097025. The cubic root of 64145361 is about 400.3026064323.

The spelling of 64145361 in words is "sixty-four million, one hundred forty-five thousand, three hundred sixty-one".