1298660764 has 6 divisors (see below), whose sum is σ = 2272656344. Its totient is φ = 649330380.

The previous prime is 1298660747. The next prime is 1298660767. The reversal of 1298660764 is 4670668921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298660767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162332592 + ... + 162332599.

Almost surely, 2^1298660764 is an apocalyptic number.

It is an amenable number.

1298660764 is a deficient number, since it is larger than the sum of its proper divisors (973995580).

1298660764 is a wasteful number, since it uses less digits than its factorization.

1298660764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324665195 (or 324665193 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 1298660764 is about 36036.9361072775. The cubic root of 1298660764 is about 1091.0179766913.

The spelling of 1298660764 in words is "one billion, two hundred ninety-eight million, six hundred sixty thousand, seven hundred sixty-four".