80892961 has 2 divisors, whose sum is σ = 80892962. Its totient is φ = 80892960.

The previous prime is 80892949. The next prime is 80892967. The reversal of 80892961 is 16929808.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75690000 + 5202961 = 8700^2 + 2281^2 .

It is a cyclic number.

It is not a de Polignac number, because 80892961 - 2¹⁵ = 80860193 is a prime.

It is a super-2 number, since 2×80892961² = 13087342278695042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80892967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40446480 + 40446481.

It is an arithmetic number, because the mean of its divisors is an integer number (40446481).

Almost surely, 2^80892961 is an apocalyptic number.

It is an amenable number.

80892961 is a deficient number, since it is larger than the sum of its proper divisors (1).

80892961 is an equidigital number, since it uses as much as digits as its factorization.

80892961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 80892961 is about 8994.0514230240. The cubic root of 80892961 is about 432.4841982488.

The spelling of 80892961 in words is "eighty million, eight hundred ninety-two thousand, nine hundred sixty-one".