64813476 has 144 divisors (see below), whose sum is σ = 193945920. Its totient is φ = 16692480.

The previous prime is 64813459. The next prime is 64813477. The reversal of 64813476 is 67431846.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64813477) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 466215 + ... + 466353.

Almost surely, 2^64813476 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 64813476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96972960).

64813476 is an abundant number, since it is smaller than the sum of its proper divisors (129132444).

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

64813476 is a wasteful number, since it uses less digits than its factorization.

64813476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 225 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 64813476 is about 8050.6817102653. The cubic root of 64813476 is about 401.6876115713.

The spelling of 64813476 in words is "sixty-four million, eight hundred thirteen thousand, four hundred seventy-six".