64441456 has 20 divisors (see below), whose sum is σ = 125016552. Its totient is φ = 32179136.

The previous prime is 64441453. The next prime is 64441493. The reversal of 64441456 is 65414446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64441453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13026 + ... + 17278.

Almost surely, 2^64441456 is an apocalyptic number.

It is an amenable number.

64441456 is a deficient number, since it is larger than the sum of its proper divisors (60575096).

64441456 is a wasteful number, since it uses less digits than its factorization.

64441456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208 (or 5202 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The square root of 64441456 is about 8027.5435844348. The cubic root of 64441456 is about 400.9175934461.

The spelling of 64441456 in words is "sixty-four million, four hundred forty-one thousand, four hundred fifty-six".