646951214 has 48 divisors (see below), whose sum is σ = 1254992256. Its totient is φ = 247665600.

The previous prime is 646951181. The next prime is 646951237. The reversal of 646951214 is 412159646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31304 + ... + 47684.

It is an arithmetic number, because the mean of its divisors is an integer number (26145672).

Almost surely, 2^646951214 is an apocalyptic number.

646951214 is a deficient number, since it is larger than the sum of its proper divisors (608041042).

646951214 is a wasteful number, since it uses less digits than its factorization.

646951214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16441 (or 16434 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 646951214 is about 25435.2356780903. The cubic root of 646951214 is about 864.8826347941.

The spelling of 646951214 in words is "six hundred forty-six million, nine hundred fifty-one thousand, two hundred fourteen".