80774381 has 2 divisors, whose sum is σ = 80774382. Its totient is φ = 80774380.

The previous prime is 80774371. The next prime is 80774383. The reversal of 80774381 is 18347708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53421481 + 27352900 = 7309^2 + 5230^2 .

It is a cyclic number.

It is not a de Polignac number, because 80774381 - 2²⁶ = 13665517 is a prime.

It is a super-2 number, since 2×80774381² = 13049001251866322, which contains 22 as substring.

Together with 80774383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80774383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40387190 + 40387191.

It is an arithmetic number, because the mean of its divisors is an integer number (40387191).

Almost surely, 2^80774381 is an apocalyptic number.

It is an amenable number.

80774381 is a deficient number, since it is larger than the sum of its proper divisors (1).

80774381 is an equidigital number, since it uses as much as digits as its factorization.

80774381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 80774381 is about 8987.4568705502. The cubic root of 80774381 is about 432.2727704769.

The spelling of 80774381 in words is "eighty million, seven hundred seventy-four thousand, three hundred eighty-one".