64476756 has 48 divisors (see below), whose sum is σ = 169919680. Its totient is φ = 21137760.

The previous prime is 64476743. The next prime is 64476781. The reversal of 64476756 is 65767446.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1695 + ... + 11481.

Almost surely, 2^64476756 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 64476756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84959840).

64476756 is an abundant number, since it is smaller than the sum of its proper divisors (105442924).

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

64476756 is a wasteful number, since it uses less digits than its factorization.

64476756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9861 (or 9853 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 64476756 is about 8029.7419634755. The cubic root of 64476756 is about 400.9907855006.

It can be divided in two parts, 6447 and 6756, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 64476756 in words is "sixty-four million, four hundred seventy-six thousand, seven hundred fifty-six".