64476456 has 64 divisors (see below), whose sum is σ = 176670720. Its totient is φ = 19446720.

The previous prime is 64476409. The next prime is 64476457. The reversal of 64476456 is 65467446.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (64476457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74281 + ... + 75143.

It is an arithmetic number, because the mean of its divisors is an integer number (2760480).

Almost surely, 2^64476456 is an apocalyptic number.

64476456 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64476456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88335360).

64476456 is an abundant number, since it is smaller than the sum of its proper divisors (112194264).

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

64476456 is a wasteful number, since it uses less digits than its factorization.

64476456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166 (or 1162 counting only the distinct ones).

The product of its digits is 483840, while the sum is 42.

The square root of 64476456 is about 8029.7232829033. The cubic root of 64476456 is about 400.9901635844.

The spelling of 64476456 in words is "sixty-four million, four hundred seventy-six thousand, four hundred fifty-six".