664051045 has 64 divisors (see below), whose sum is σ = 992839680. Its totient is φ = 416302848.

The previous prime is 664051027. The next prime is 664051103. The reversal of 664051045 is 540150466.

It is a cyclic number.

It is not a de Polignac number, because 664051045 - 2¹⁷ = 663919973 is a prime.

664051045 is a modest number, since divided by 51045 gives 6640 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 664050998 and 664051016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2925222 + ... + 2925448.

It is an arithmetic number, because the mean of its divisors is an integer number (15513120).

Almost surely, 2^664051045 is an apocalyptic number.

It is an amenable number.

664051045 is a deficient number, since it is larger than the sum of its proper divisors (328788635).

664051045 is a wasteful number, since it uses less digits than its factorization.

664051045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 664051045 is about 25769.1878995051. The cubic root of 664051045 is about 872.4364893303.

The spelling of 664051045 in words is "six hundred sixty-four million, fifty-one thousand, forty-five".