7656861427 has 2 divisors, whose sum is σ = 7656861428. Its totient is φ = 7656861426.

The previous prime is 7656861389. The next prime is 7656861451. The reversal of 7656861427 is 7241686567.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7656861427 is a prime.

It is not a weakly prime, because it can be changed into another prime (7656861497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3828430713 + 3828430714.

It is an arithmetic number, because the mean of its divisors is an integer number (3828430714).

Almost surely, 2^7656861427 is an apocalyptic number.

7656861427 is a deficient number, since it is larger than the sum of its proper divisors (1).

7656861427 is an equidigital number, since it uses as much as digits as its factorization.

7656861427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 52.

The square root of 7656861427 is about 87503.4937988193. The cubic root of 7656861427 is about 1970.9862555407.

The spelling of 7656861427 in words is "seven billion, six hundred fifty-six million, eight hundred sixty-one thousand, four hundred twenty-seven".