78968633 has 2 divisors, whose sum is σ = 78968634. Its totient is φ = 78968632.

The previous prime is 78968623. The next prime is 78968651. The reversal of 78968633 is 33686987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76510009 + 2458624 = 8747^2 + 1568^2 .

It is a cyclic number.

It is not a de Polignac number, because 78968633 - 2¹² = 78964537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78968623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39484316 + 39484317.

It is an arithmetic number, because the mean of its divisors is an integer number (39484317).

Almost surely, 2^78968633 is an apocalyptic number.

It is an amenable number.

78968633 is a deficient number, since it is larger than the sum of its proper divisors (1).

78968633 is an equidigital number, since it uses as much as digits as its factorization.

78968633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 78968633 is about 8886.4297105193. The cubic root of 78968633 is about 429.0272458213.

The spelling of 78968633 in words is "seventy-eight million, nine hundred sixty-eight thousand, six hundred thirty-three".