64413444 has 24 divisors (see below), whose sum is σ = 153135360. Its totient is φ = 21065824.

The previous prime is 64413431. The next prime is 64413451. The reversal of 64413444 is 44431446.

It is a super-2 number, since 2×64413444² = 8298183535882272, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50004 + ... + 51275.

It is an arithmetic number, because the mean of its divisors is an integer number (6380640).

Almost surely, 2^64413444 is an apocalyptic number.

It is an amenable number.

64413444 is an abundant number, since it is smaller than the sum of its proper divisors (88721916).

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

64413444 is a wasteful number, since it uses less digits than its factorization.

64413444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101339 (or 101337 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

The square root of 64413444 is about 8025.7986518477. The cubic root of 64413444 is about 400.8594935211.

The spelling of 64413444 in words is "sixty-four million, four hundred thirteen thousand, four hundred forty-four".