662857642 has 32 divisors (see below), whose sum is σ = 1085793984. Its totient is φ = 302265600.

The previous prime is 662857639. The next prime is 662857651. The reversal of 662857642 is 246758266.

662857642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 662857592 and 662857601.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189792 + ... + 193252.

It is an arithmetic number, because the mean of its divisors is an integer number (33931062).

Almost surely, 2^662857642 is an apocalyptic number.

662857642 is a deficient number, since it is larger than the sum of its proper divisors (422936342).

662857642 is a wasteful number, since it uses less digits than its factorization.

662857642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3654.

The product of its digits is 967680, while the sum is 46.

The square root of 662857642 is about 25746.0218674653. The cubic root of 662857642 is about 871.9135412483.

The spelling of 662857642 in words is "six hundred sixty-two million, eight hundred fifty-seven thousand, six hundred forty-two".