76081969 has 2 divisors, whose sum is σ = 76081970. Its totient is φ = 76081968.

The previous prime is 76081963. The next prime is 76081979. The reversal of 76081969 is 96918067.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75481344 + 600625 = 8688^2 + 775^2 .

It is a cyclic number.

It is not a de Polignac number, because 76081969 - 2³ = 76081961 is a prime.

It is a super-2 number, since 2×76081969² = 11576932013833922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (76081961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38040984 + 38040985.

It is an arithmetic number, because the mean of its divisors is an integer number (38040985).

Almost surely, 2^76081969 is an apocalyptic number.

It is an amenable number.

76081969 is a deficient number, since it is larger than the sum of its proper divisors (1).

76081969 is an equidigital number, since it uses as much as digits as its factorization.

76081969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 76081969 is about 8722.4978647174. The cubic root of 76081969 is about 423.7345871417.

The spelling of 76081969 in words is "seventy-six million, eighty-one thousand, nine hundred sixty-nine".