664652054 has 8 divisors (see below), whose sum is σ = 1087612488. Its totient is φ = 302114560.

The previous prime is 664652039. The next prime is 664652063. The reversal of 664652054 is 450256466.

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

It is a junction number, because it is equal to n+sod(n) for n = 664651999 and 664652017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15105707 + ... + 15105750.

It is an arithmetic number, because the mean of its divisors is an integer number (135951561).

Almost surely, 2^664652054 is an apocalyptic number.

664652054 is a deficient number, since it is larger than the sum of its proper divisors (422960434).

664652054 is a wasteful number, since it uses less digits than its factorization.

664652054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30211470.

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 664652054 is about 25780.8466501781. The cubic root of 664652054 is about 872.6996137179.

The spelling of 664652054 in words is "six hundred sixty-four million, six hundred fifty-two thousand, fifty-four".