64445554 has 8 divisors (see below), whose sum is σ = 98725248. Its totient is φ = 31537140.

The previous prime is 64445551. The next prime is 64445603. The reversal of 64445554 is 45554446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (64445551) 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, 342702 + ... + 342889.

It is an arithmetic number, because the mean of its divisors is an integer number (12340656).

Almost surely, 2^64445554 is an apocalyptic number.

64445554 is a deficient number, since it is larger than the sum of its proper divisors (34279694).

64445554 is a wasteful number, since it uses less digits than its factorization.

64445554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685640.

The product of its digits is 192000, while the sum is 37.

The square root of 64445554 is about 8027.7988265776. The cubic root of 64445554 is about 400.9260917306.

The spelling of 64445554 in words is "sixty-four million, four hundred forty-five thousand, five hundred fifty-four".