64906344 has 96 divisors (see below), whose sum is σ = 182337480. Its totient is φ = 20846592.

The previous prime is 64906327. The next prime is 64906367. The reversal of 64906344 is 44360946.

64906344 is a `hidden beast` number, since 649 + 0 + 6 + 3 + 4 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 54908100 + 9998244 = 7410^2 + 3162^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 64906299 and 64906308.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 278452 + ... + 278684.

Almost surely, 2^64906344 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 64906344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91168740).

64906344 is an abundant number, since it is smaller than the sum of its proper divisors (117431136).

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

64906344 is a wasteful number, since it uses less digits than its factorization.

64906344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 64906344 is about 8056.4473560000. The cubic root of 64906344 is about 401.8793727328.

The spelling of 64906344 in words is "sixty-four million, nine hundred six thousand, three hundred forty-four".