76219961 has 2 divisors, whose sum is σ = 76219962. Its totient is φ = 76219960.

The previous prime is 76219933. The next prime is 76219973. The reversal of 76219961 is 16991267.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45306361 + 30913600 = 6731^2 + 5560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76219961 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (76219921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38109980 + 38109981.

It is an arithmetic number, because the mean of its divisors is an integer number (38109981).

Almost surely, 2^76219961 is an apocalyptic number.

It is an amenable number.

76219961 is a deficient number, since it is larger than the sum of its proper divisors (1).

76219961 is an equidigital number, since it uses as much as digits as its factorization.

76219961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 41.

The square root of 76219961 is about 8730.4044007136. The cubic root of 76219961 is about 423.9906121839.

The spelling of 76219961 in words is "seventy-six million, two hundred nineteen thousand, nine hundred sixty-one".