647407662 has 16 divisors (see below), whose sum is σ = 1412525952. Its totient is φ = 196184120.

The previous prime is 647407661. The next prime is 647407669. The reversal of 647407662 is 266704746.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647407661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4904538 + ... + 4904669.

It is an arithmetic number, because the mean of its divisors is an integer number (88282872).

Almost surely, 2^647407662 is an apocalyptic number.

647407662 is an abundant number, since it is smaller than the sum of its proper divisors (765118290).

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

647407662 is a wasteful number, since it uses less digits than its factorization.

647407662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9809223.

The product of its (nonzero) digits is 338688, while the sum is 42.

The square root of 647407662 is about 25444.2068455670. The cubic root of 647407662 is about 865.0859892018.

The spelling of 647407662 in words is "six hundred forty-seven million, four hundred seven thousand, six hundred sixty-two".