64475377 has 4 divisors (see below), whose sum is σ = 65568240. Its totient is φ = 63382516.

The previous prime is 64475357. The next prime is 64475431. The reversal of 64475377 is 77357446.

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 64475377 - 2¹¹ = 64473329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64475357) 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, 546343 + ... + 546460.

It is an arithmetic number, because the mean of its divisors is an integer number (16392060).

Almost surely, 2^64475377 is an apocalyptic number.

It is an amenable number.

64475377 is a deficient number, since it is larger than the sum of its proper divisors (1092863).

64475377 is a wasteful number, since it uses less digits than its factorization.

64475377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092862.

The product of its digits is 493920, while the sum is 43.

The square root of 64475377 is about 8029.6560947528. The cubic root of 64475377 is about 400.9879267431.

The spelling of 64475377 in words is "sixty-four million, four hundred seventy-five thousand, three hundred seventy-seven".