767679961 has 2 divisors, whose sum is σ = 767679962. Its totient is φ = 767679960.

The previous prime is 767679943. The next prime is 767680003. The reversal of 767679961 is 169976767.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 459888025 + 307791936 = 21445^2 + 17544^2 .

It is a cyclic number.

It is not a de Polignac number, because 767679961 - 2⁷ = 767679833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 767679896 and 767679905.

It is not a weakly prime, because it can be changed into another prime (767679161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383839980 + 383839981.

It is an arithmetic number, because the mean of its divisors is an integer number (383839981).

Almost surely, 2^767679961 is an apocalyptic number.

It is an amenable number.

767679961 is a deficient number, since it is larger than the sum of its proper divisors (1).

767679961 is an equidigital number, since it uses as much as digits as its factorization.

767679961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6001128, while the sum is 58.

The square root of 767679961 is about 27707.0381130860. The cubic root of 767679961 is about 915.6441703962.

The spelling of 767679961 in words is "seven hundred sixty-seven million, six hundred seventy-nine thousand, nine hundred sixty-one".