78734059 has 2 divisors, whose sum is σ = 78734060. Its totient is φ = 78734058.

The previous prime is 78734023. The next prime is 78734069. The reversal of 78734059 is 95043787.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78734059 - 2¹⁵ = 78701291 is a prime.

It is not a weakly prime, because it can be changed into another prime (78734069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39367029 + 39367030.

It is an arithmetic number, because the mean of its divisors is an integer number (39367030).

Almost surely, 2^78734059 is an apocalyptic number.

78734059 is a deficient number, since it is larger than the sum of its proper divisors (1).

78734059 is an equidigital number, since it uses as much as digits as its factorization.

78734059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 78734059 is about 8873.2214555932. The cubic root of 78734059 is about 428.6020202343.

The spelling of 78734059 in words is "seventy-eight million, seven hundred thirty-four thousand, fifty-nine".