664267054 has 32 divisors (see below), whose sum is σ = 1109479680. Its totient is φ = 295747200.

The previous prime is 664267033. The next prime is 664267081. The reversal of 664267054 is 450762466.

It is a junction number, because it is equal to n+sod(n) for n = 664266998 and 664267016.

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, 253302 + ... + 255910.

It is an arithmetic number, because the mean of its divisors is an integer number (34671240).

Almost surely, 2^664267054 is an apocalyptic number.

664267054 is a deficient number, since it is larger than the sum of its proper divisors (445212626).

664267054 is a wasteful number, since it uses less digits than its factorization.

664267054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856.

The product of its (nonzero) digits is 241920, while the sum is 40.

The square root of 664267054 is about 25773.3787850953. The cubic root of 664267054 is about 872.5310772914.

The spelling of 664267054 in words is "six hundred sixty-four million, two hundred sixty-seven thousand, fifty-four".