1320662764 has 24 divisors (see below), whose sum is σ = 2346962688. Its totient is φ = 650128080.

The previous prime is 1320662747. The next prime is 1320662809. The reversal of 1320662764 is 4672660231.

It is a super-2 number, since 2×1320662764² = 3488300272432239392, which contains 22 as substring.

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, 232057 + ... + 237679.

It is an arithmetic number, because the mean of its divisors is an integer number (97790112).

Almost surely, 2^1320662764 is an apocalyptic number.

It is an amenable number.

1320662764 is a deficient number, since it is larger than the sum of its proper divisors (1026299924).

1320662764 is a wasteful number, since it uses less digits than its factorization.

1320662764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525 (or 6523 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 1320662764 is about 36340.9240939192. The cubic root of 1320662764 is about 1097.1448723101.

The spelling of 1320662764 in words is "one billion, three hundred twenty million, six hundred sixty-two thousand, seven hundred sixty-four".