80876261 has 2 divisors, whose sum is σ = 80876262. Its totient is φ = 80876260.

The previous prime is 80876233. The next prime is 80876281. The reversal of 80876261 is 16267808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77545636 + 3330625 = 8806^2 + 1825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80876261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80876281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40438130 + 40438131.

It is an arithmetic number, because the mean of its divisors is an integer number (40438131).

Almost surely, 2^80876261 is an apocalyptic number.

It is an amenable number.

80876261 is a deficient number, since it is larger than the sum of its proper divisors (1).

80876261 is an equidigital number, since it uses as much as digits as its factorization.

80876261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 80876261 is about 8993.1229837026. The cubic root of 80876261 is about 432.4544347065.

The spelling of 80876261 in words is "eighty million, eight hundred seventy-six thousand, two hundred sixty-one".