1320220684 has 12 divisors (see below), whose sum is σ = 2384915008. Its totient is φ = 638816400.

The previous prime is 1320220669. The next prime is 1320220687. The reversal of 1320220684 is 4860220231.

It is a super-2 number, since 2×1320220684² = 3485965308922855712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1320220687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5323347 + ... + 5323594.

Almost surely, 2^1320220684 is an apocalyptic number.

It is an amenable number.

1320220684 is a deficient number, since it is larger than the sum of its proper divisors (1064694324).

1320220684 is a wasteful number, since it uses less digits than its factorization.

1320220684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10646976 (or 10646974 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 1320220684 is about 36334.8411858370. The cubic root of 1320220684 is about 1097.0224388502.

The spelling of 1320220684 in words is "one billion, three hundred twenty million, two hundred twenty thousand, six hundred eighty-four".