664603250902 has 8 divisors (see below), whose sum is σ = 1011784053816. Its totient is φ = 327341899632.

The previous prime is 664603250897. The next prime is 664603250939. The reversal of 664603250902 is 209052306466.

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

It is a super-2 number, since 2×664603250902² (a number of 24 digits) contains 22 as substring.

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, 2479862743 + ... + 2479863010.

It is an arithmetic number, because the mean of its divisors is an integer number (126473006727).

Almost surely, 2^664603250902 is an apocalyptic number.

664603250902 is a deficient number, since it is larger than the sum of its proper divisors (347180802914).

664603250902 is a wasteful number, since it uses less digits than its factorization.

664603250902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4959725822.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 664603250902 in words is "six hundred sixty-four billion, six hundred three million, two hundred fifty thousand, nine hundred two".