1296764764 has 6 divisors (see below), whose sum is σ = 2269338344. Its totient is φ = 648382380.

The previous prime is 1296764761. The next prime is 1296764767. The reversal of 1296764764 is 4674676921.

It is an interprime number because it is at equal distance from previous prime (1296764761) and next prime (1296764767).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296764761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162095592 + ... + 162095599.

Almost surely, 2^1296764764 is an apocalyptic number.

It is an amenable number.

1296764764 is a deficient number, since it is larger than the sum of its proper divisors (972573580).

1296764764 is a wasteful number, since it uses less digits than its factorization.

1296764764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324191195 (or 324191193 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 52.

The square root of 1296764764 is about 36010.6201557263. The cubic root of 1296764764 is about 1090.4867685321.

The spelling of 1296764764 in words is "one billion, two hundred ninety-six million, seven hundred sixty-four thousand, seven hundred sixty-four".