64231145 has 8 divisors (see below), whose sum is σ = 84084480. Its totient is φ = 46713520.

The previous prime is 64231129. The next prime is 64231159. The reversal of 64231145 is 54113246.

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

It is not a de Polignac number, because 64231145 - 2⁴ = 64231129 is a prime.

It is a super-2 number, since 2×64231145² = 8251279976022050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583865 + ... + 583974.

It is an arithmetic number, because the mean of its divisors is an integer number (10510560).

Almost surely, 2^64231145 is an apocalyptic number.

It is an amenable number.

64231145 is a deficient number, since it is larger than the sum of its proper divisors (19853335).

64231145 is a wasteful number, since it uses less digits than its factorization.

64231145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167855.

The product of its digits is 2880, while the sum is 26.

The square root of 64231145 is about 8014.4335420540. The cubic root of 64231145 is about 400.4809735127.

The spelling of 64231145 in words is "sixty-four million, two hundred thirty-one thousand, one hundred forty-five".