64379873 has 4 divisors (see below), whose sum is σ = 64396548. Its totient is φ = 64363200.

The previous prime is 64379857. The next prime is 64379899. The reversal of 64379873 is 37897346.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56806369 + 7573504 = 7537^2 + 2752^2 .

It is a cyclic number.

It is not a de Polignac number, because 64379873 - 2⁴ = 64379857 is a prime.

It is a super-2 number, since 2×64379873² = 8289536094992258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64379803) 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, 773 + ... + 11373.

It is an arithmetic number, because the mean of its divisors is an integer number (16099137).

Almost surely, 2^64379873 is an apocalyptic number.

It is an amenable number.

64379873 is a deficient number, since it is larger than the sum of its proper divisors (16675).

64379873 is a wasteful number, since it uses less digits than its factorization.

64379873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16674.

The product of its digits is 762048, while the sum is 47.

The square root of 64379873 is about 8023.7069363231. The cubic root of 64379873 is about 400.7898414331.

The spelling of 64379873 in words is "sixty-four million, three hundred seventy-nine thousand, eight hundred seventy-three".