64448994 has 16 divisors (see below), whose sum is σ = 130347360. Its totient is φ = 21241440.

The previous prime is 64448983. The next prime is 64449017. The reversal of 64448994 is 49984446.

It is a happy number.

It is a super-2 number, since 2×64448994² = 8307345655224072, which contains 22 as substring.

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, 59812 + ... + 60879.

It is an arithmetic number, because the mean of its divisors is an integer number (8146710).

Almost surely, 2^64448994 is an apocalyptic number.

64448994 is an abundant number, since it is smaller than the sum of its proper divisors (65898366).

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

64448994 is a wasteful number, since it uses less digits than its factorization.

64448994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120785.

The product of its digits is 995328, while the sum is 48.

The square root of 64448994 is about 8028.0130792121. The cubic root of 64448994 is about 400.9332252002.

The spelling of 64448994 in words is "sixty-four million, four hundred forty-eight thousand, nine hundred ninety-four".