647999466 has 16 divisors (see below), whose sum is σ = 1306205184. Its totient is φ = 214298784.

The previous prime is 647999453. The next prime is 647999497. The reversal of 647999466 is 664999746.

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, 424435 + ... + 425958.

It is an arithmetic number, because the mean of its divisors is an integer number (81637824).

Almost surely, 2^647999466 is an apocalyptic number.

647999466 is an abundant number, since it is smaller than the sum of its proper divisors (658205718).

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

647999466 is a wasteful number, since it uses less digits than its factorization.

647999466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850525.

The product of its digits is 17635968, while the sum is 60.

The square root of 647999466 is about 25455.8336339630. The cubic root of 647999466 is about 865.3495044803.

The spelling of 647999466 in words is "six hundred forty-seven million, nine hundred ninety-nine thousand, four hundred sixty-six".