664054454 has 16 divisors (see below), whose sum is σ = 1151172000. Its totient is φ = 281396544.

The previous prime is 664054439. The next prime is 664054471. The reversal of 664054454 is 454450466.

It is a congruent number.

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, 265229 + ... + 267720.

It is an arithmetic number, because the mean of its divisors is an integer number (71948250).

Almost surely, 2^664054454 is an apocalyptic number.

664054454 is a deficient number, since it is larger than the sum of its proper divisors (487117546).

664054454 is a wasteful number, since it uses less digits than its factorization.

664054454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533047.

The product of its (nonzero) digits is 230400, while the sum is 38.

The square root of 664054454 is about 25769.2540443064. The cubic root of 664054454 is about 872.4379822532.

The spelling of 664054454 in words is "six hundred sixty-four million, fifty-four thousand, four hundred fifty-four".