78679033 has 2 divisors, whose sum is σ = 78679034. Its totient is φ = 78679032.

The previous prime is 78678989. The next prime is 78679061. The reversal of 78679033 is 33097687.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57638464 + 21040569 = 7592^2 + 4587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78679033 is a prime.

It is not a weakly prime, because it can be changed into another prime (78679063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39339516 + 39339517.

It is an arithmetic number, because the mean of its divisors is an integer number (39339517).

Almost surely, 2^78679033 is an apocalyptic number.

It is an amenable number.

78679033 is a deficient number, since it is larger than the sum of its proper divisors (1).

78679033 is an equidigital number, since it uses as much as digits as its factorization.

78679033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 78679033 is about 8870.1202359382. The cubic root of 78679033 is about 428.5021492195.

It can be divided in two parts, 7867 and 9033, that added together give a square (16900 = 130²).

The spelling of 78679033 in words is "seventy-eight million, six hundred seventy-nine thousand, thirty-three".