646357102 has 16 divisors (see below), whose sum is σ = 1034657280. Its totient is φ = 301771008.

The previous prime is 646357093. The next prime is 646357139. The reversal of 646357102 is 201753646.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70527 + ... + 79162.

It is an arithmetic number, because the mean of its divisors is an integer number (64666080).

Almost surely, 2^646357102 is an apocalyptic number.

646357102 is a deficient number, since it is larger than the sum of its proper divisors (388300178).

646357102 is a wasteful number, since it uses less digits than its factorization.

646357102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149835.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 646357102 is about 25423.5540788459. The cubic root of 646357102 is about 864.6178056947.

The spelling of 646357102 in words is "six hundred forty-six million, three hundred fifty-seven thousand, one hundred two".