78592961 has 2 divisors, whose sum is σ = 78592962. Its totient is φ = 78592960.

The previous prime is 78592951. The next prime is 78592973. The reversal of 78592961 is 16929587.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77880625 + 712336 = 8825^2 + 844^2 .

It is a cyclic number.

It is not a de Polignac number, because 78592961 - 2¹⁰ = 78591937 is a prime.

It is not a weakly prime, because it can be changed into another prime (78592951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39296480 + 39296481.

It is an arithmetic number, because the mean of its divisors is an integer number (39296481).

Almost surely, 2^78592961 is an apocalyptic number.

It is an amenable number.

78592961 is a deficient number, since it is larger than the sum of its proper divisors (1).

78592961 is an equidigital number, since it uses as much as digits as its factorization.

78592961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 47.

The square root of 78592961 is about 8865.2671138551. The cubic root of 78592961 is about 428.3458369511.

The spelling of 78592961 in words is "seventy-eight million, five hundred ninety-two thousand, nine hundred sixty-one".