664075245 has 8 divisors (see below), whose sum is σ = 1062520416. Its totient is φ = 354173456.

The previous prime is 664075231. The next prime is 664075261. The reversal of 664075245 is 542570466.

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

It is a cyclic number.

It is not a de Polignac number, because 664075245 - 2⁴ = 664075229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22135827 + ... + 22135856.

It is an arithmetic number, because the mean of its divisors is an integer number (132815052).

Almost surely, 2^664075245 is an apocalyptic number.

It is an amenable number.

664075245 is a deficient number, since it is larger than the sum of its proper divisors (398445171).

664075245 is a wasteful number, since it uses less digits than its factorization.

664075245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44271691.

The product of its (nonzero) digits is 201600, while the sum is 39.

The square root of 664075245 is about 25769.6574482472. The cubic root of 664075245 is about 872.4470872639.

The spelling of 664075245 in words is "six hundred sixty-four million, seventy-five thousand, two hundred forty-five".