646314402 has 16 divisors (see below), whose sum is σ = 1293594912. Its totient is φ = 215277120.

The previous prime is 646314401. The next prime is 646314451. The reversal of 646314402 is 204413646.

646314402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 646314402.

It is not an unprimeable number, because it can be changed into a prime (646314401) 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, 31408 + ... + 47739.

It is an arithmetic number, because the mean of its divisors is an integer number (80849682).

Almost surely, 2^646314402 is an apocalyptic number.

646314402 is an abundant number, since it is smaller than the sum of its proper divisors (647280510).

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

646314402 is a wasteful number, since it uses less digits than its factorization.

646314402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80513.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 646314402 is about 25422.7142925377. The cubic root of 646314402 is about 864.5987656557.

The spelling of 646314402 in words is "six hundred forty-six million, three hundred fourteen thousand, four hundred two".