1297076664 has 64 divisors (see below), whose sum is σ = 3499655040. Its totient is φ = 398240640.

The previous prime is 1297076663. The next prime is 1297076689. The reversal of 1297076664 is 4666707921.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297076663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148959 + ... + 157425.

It is an arithmetic number, because the mean of its divisors is an integer number (54682110).

Almost surely, 2^1297076664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1297076664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1749827520).

1297076664 is an abundant number, since it is smaller than the sum of its proper divisors (2202578376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1297076664 is a wasteful number, since it uses less digits than its factorization.

1297076664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8980 (or 8976 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 1297076664 is about 36014.9505622318. The cubic root of 1297076664 is about 1090.5741900823.

The spelling of 1297076664 in words is "one billion, two hundred ninety-seven million, seventy-six thousand, six hundred sixty-four".