80868761 has 2 divisors, whose sum is σ = 80868762. Its totient is φ = 80868760.

The previous prime is 80868727. The next prime is 80868793. The reversal of 80868761 is 16786808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70241161 + 10627600 = 8381^2 + 3260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80868761 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80868661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40434380 + 40434381.

It is an arithmetic number, because the mean of its divisors is an integer number (40434381).

Almost surely, 2^80868761 is an apocalyptic number.

It is an amenable number.

80868761 is a deficient number, since it is larger than the sum of its proper divisors (1).

80868761 is an equidigital number, since it uses as much as digits as its factorization.

80868761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 80868761 is about 8992.7059887444. The cubic root of 80868761 is about 432.4410665130.

The spelling of 80868761 in words is "eighty million, eight hundred sixty-eight thousand, seven hundred sixty-one".