64464451 has 4 divisors (see below), whose sum is σ = 64497400. Its totient is φ = 64431504.

The previous prime is 64464443. The next prime is 64464461. The reversal of 64464451 is 15446446.

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

It is a cyclic number.

It is not a de Polignac number, because 64464451 - 2³ = 64464443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64464431) 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, 13341 + ... + 17518.

It is an arithmetic number, because the mean of its divisors is an integer number (16124350).

Almost surely, 2^64464451 is an apocalyptic number.

64464451 is a deficient number, since it is larger than the sum of its proper divisors (32949).

64464451 is a wasteful number, since it uses less digits than its factorization.

64464451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32948.

The product of its digits is 46080, while the sum is 34.

The square root of 64464451 is about 8028.9757130035. The cubic root of 64464451 is about 400.9652749867.

It can be divided in two parts, 6446445 and 1, that added together give a palindrome (6446446).

The spelling of 64464451 in words is "sixty-four million, four hundred sixty-four thousand, four hundred fifty-one".