1297655707 has 2 divisors, whose sum is σ = 1297655708. Its totient is φ = 1297655706.

The previous prime is 1297655669. The next prime is 1297655743. The reversal of 1297655707 is 7075567921.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1297655707 - 2¹⁵ = 1297622939 is a prime.

It is not a weakly prime, because it can be changed into another prime (1297658707) 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 as a sum of consecutive naturals, namely, 648827853 + 648827854.

It is an arithmetic number, because the mean of its divisors is an integer number (648827854).

Almost surely, 2^1297655707 is an apocalyptic number.

1297655707 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297655707 is an equidigital number, since it uses as much as digits as its factorization.

1297655707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 926100, while the sum is 49.

The square root of 1297655707 is about 36022.9885906209. The cubic root of 1297655707 is about 1090.7364512196.

The spelling of 1297655707 in words is "one billion, two hundred ninety-seven million, six hundred fifty-five thousand, seven hundred seven".