647253606 has 8 divisors (see below), whose sum is σ = 1294507224. Its totient is φ = 215751200.

The previous prime is 647253589. The next prime is 647253611. The reversal of 647253606 is 606352746.

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

647253606 is an admirable number.

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, 53937795 + ... + 53937806.

It is an arithmetic number, because the mean of its divisors is an integer number (161813403).

Almost surely, 2^647253606 is an apocalyptic number.

647253606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647253606 is a wasteful number, since it uses less digits than its factorization.

647253606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107875606.

The product of its (nonzero) digits is 181440, while the sum is 39.

The square root of 647253606 is about 25441.1793358720. The cubic root of 647253606 is about 865.0173656398.

The spelling of 647253606 in words is "six hundred forty-seven million, two hundred fifty-three thousand, six hundred six".