64471464 has 80 divisors (see below), whose sum is σ = 185529300. Its totient is φ = 20901888.

The previous prime is 64471447. The next prime is 64471481. The reversal of 64471464 is 46417446.

64471464 is a `hidden beast` number, since 644 + 7 + 1 + 4 + 6 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (64471447) and next prime (64471481).

It can be written as a sum of positive squares in 2 ways, for example, as 64160100 + 311364 = 8010^2 + 558^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22632 + ... + 25320.

Almost surely, 2^64471464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64471464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92764650).

64471464 is an abundant number, since it is smaller than the sum of its proper divisors (121057836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64471464 is a wasteful number, since it uses less digits than its factorization.

64471464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2744 (or 2731 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 64471464 is about 8029.4124318035. The cubic root of 64471464 is about 400.9798146153.

The spelling of 64471464 in words is "sixty-four million, four hundred seventy-one thousand, four hundred sixty-four".