80706961 has 2 divisors, whose sum is σ = 80706962. Its totient is φ = 80706960.

The previous prime is 80706947. The next prime is 80706991. The reversal of 80706961 is 16960708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80209936 + 497025 = 8956^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 80706961 - 2¹⁷ = 80575889 is a prime.

It is a super-2 number, since 2×80706961² = 13027227107711042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80706961.

It is not a weakly prime, because it can be changed into another prime (80706991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40353480 + 40353481.

It is an arithmetic number, because the mean of its divisors is an integer number (40353481).

Almost surely, 2^80706961 is an apocalyptic number.

It is an amenable number.

80706961 is a deficient number, since it is larger than the sum of its proper divisors (1).

80706961 is an equidigital number, since it uses as much as digits as its factorization.

80706961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 80706961 is about 8983.7053046057. The cubic root of 80706961 is about 432.1524685442.

The spelling of 80706961 in words is "eighty million, seven hundred six thousand, nine hundred sixty-one".