456640646 has 16 divisors (see below), whose sum is σ = 853977600. Its totient is φ = 177911880.

The previous prime is 456640609. The next prime is 456640687. The reversal of 456640646 is 646046654.

It is a congruent number.

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, 1482446 + ... + 1482753.

It is an arithmetic number, because the mean of its divisors is an integer number (53373600).

Almost surely, 2^456640646 is an apocalyptic number.

456640646 is a deficient number, since it is larger than the sum of its proper divisors (397336954).

456640646 is a wasteful number, since it uses less digits than its factorization.

456640646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965219.

The product of its (nonzero) digits is 414720, while the sum is 41.

The square root of 456640646 is about 21369.1517379610. The cubic root of 456640646 is about 770.0605147245.

The spelling of 456640646 in words is "four hundred fifty-six million, six hundred forty thousand, six hundred forty-six".