64442896 has 40 divisors (see below), whose sum is σ = 146024384. Its totient is φ = 26974080.

The previous prime is 64442887. The next prime is 64442897. The reversal of 64442896 is 69824446.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64442897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1875 + ... + 11506.

Almost surely, 2^64442896 is an apocalyptic number.

It is an amenable number.

64442896 is an abundant number, since it is smaller than the sum of its proper divisors (81581488).

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

64442896 is a wasteful number, since it uses less digits than its factorization.

64442896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13439 (or 13433 counting only the distinct ones).

The product of its digits is 331776, while the sum is 43.

The square root of 64442896 is about 8027.6332751316. The cubic root of 64442896 is about 400.9205797072.

The spelling of 64442896 in words is "sixty-four million, four hundred forty-two thousand, eight hundred ninety-six".