664554455 has 16 divisors (see below), whose sum is σ = 808501824. Its totient is φ = 524328960.

The previous prime is 664554437. The next prime is 664554487. The reversal of 664554455 is 554455466.

It is not a de Polignac number, because 664554455 - 2¹⁸ = 664292311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129845 + ... + 134865.

It is an arithmetic number, because the mean of its divisors is an integer number (50531364).

Almost surely, 2^664554455 is an apocalyptic number.

664554455 is a deficient number, since it is larger than the sum of its proper divisors (143947369).

664554455 is a wasteful number, since it uses less digits than its factorization.

664554455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5386.

The product of its digits is 1440000, while the sum is 44.

The square root of 664554455 is about 25778.9537219803. The cubic root of 664554455 is about 872.6568952366.

The spelling of 664554455 in words is "six hundred sixty-four million, five hundred fifty-four thousand, four hundred fifty-five".