1297682656 has 24 divisors (see below), whose sum is σ = 2583524160. Its totient is φ = 641549568.

The previous prime is 1297682647. The next prime is 1297682657. The reversal of 1297682656 is 6562867921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297682657) 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, 224976 + ... + 230671.

It is an arithmetic number, because the mean of its divisors is an integer number (107646840).

Almost surely, 2^1297682656 is an apocalyptic number.

1297682656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1297682656 is a deficient number, since it is larger than the sum of its proper divisors (1285841504).

1297682656 is an equidigital number, since it uses as much as digits as its factorization.

1297682656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455746 (or 455738 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

The square root of 1297682656 is about 36023.3626414859. The cubic root of 1297682656 is about 1090.7440017722.

The spelling of 1297682656 in words is "one billion, two hundred ninety-seven million, six hundred eighty-two thousand, six hundred fifty-six".