646872082 has 8 divisors (see below), whose sum is σ = 971252352. Its totient is φ = 323121300.

The previous prime is 646872067. The next prime is 646872089. The reversal of 646872082 is 280278646.

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

It is not an unprimeable number, because it can be changed into a prime (646872089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154794 + ... + 158917.

It is an arithmetic number, because the mean of its divisors is an integer number (121406544).

Almost surely, 2^646872082 is an apocalyptic number.

646872082 is a deficient number, since it is larger than the sum of its proper divisors (324380270).

646872082 is a wasteful number, since it uses less digits than its factorization.

646872082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314744.

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 646872082 is about 25433.6800719047. The cubic root of 646872082 is about 864.8473705775.

The spelling of 646872082 in words is "six hundred forty-six million, eight hundred seventy-two thousand, eighty-two".