76966381 has 2 divisors, whose sum is σ = 76966382. Its totient is φ = 76966380.

The previous prime is 76966367. The next prime is 76966411. The reversal of 76966381 is 18366967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74978281 + 1988100 = 8659^2 + 1410^2 .

It is a cyclic number.

It is not a de Polignac number, because 76966381 - 2⁹ = 76965869 is a prime.

It is a super-2 number, since 2×76966381² = 11847647608474322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76966301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38483190 + 38483191.

It is an arithmetic number, because the mean of its divisors is an integer number (38483191).

Almost surely, 2^76966381 is an apocalyptic number.

It is an amenable number.

76966381 is a deficient number, since it is larger than the sum of its proper divisors (1).

76966381 is an equidigital number, since it uses as much as digits as its factorization.

76966381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 76966381 is about 8773.0485579415. The cubic root of 76966381 is about 425.3701614752.

The spelling of 76966381 in words is "seventy-six million, nine hundred sixty-six thousand, three hundred eighty-one".