64377455 has 4 divisors (see below), whose sum is σ = 77252952. Its totient is φ = 51501960.

The previous prime is 64377449. The next prime is 64377463. The reversal of 64377455 is 55477346.

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

It is not a de Polignac number, because 64377455 - 2²⁰ = 63328879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6437741 + ... + 6437750.

It is an arithmetic number, because the mean of its divisors is an integer number (19313238).

Almost surely, 2^64377455 is an apocalyptic number.

64377455 is a deficient number, since it is larger than the sum of its proper divisors (12875497).

64377455 is a wasteful number, since it uses less digits than its factorization.

64377455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12875496.

The product of its digits is 352800, while the sum is 41.

The square root of 64377455 is about 8023.5562564240. The cubic root of 64377455 is about 400.7848237056.

The spelling of 64377455 in words is "sixty-four million, three hundred seventy-seven thousand, four hundred fifty-five".