664051046 has 4 divisors (see below), whose sum is σ = 996076572. Its totient is φ = 332025522.

The previous prime is 664051027. The next prime is 664051103. The reversal of 664051046 is 640150466.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166012760 + ... + 166012763.

It is an arithmetic number, because the mean of its divisors is an integer number (249019143).

Almost surely, 2^664051046 is an apocalyptic number.

664051046 is a deficient number, since it is larger than the sum of its proper divisors (332025526).

664051046 is a wasteful number, since it uses less digits than its factorization.

664051046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332025525.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 664051046 is about 25769.1879189081. The cubic root of 664051046 is about 872.4364897683.

The spelling of 664051046 in words is "six hundred sixty-four million, fifty-one thousand, forty-six".