78674259 has 16 divisors (see below), whose sum is σ = 106099200. Its totient is φ = 51853536.

The previous prime is 78674251. The next prime is 78674263. The reversal of 78674259 is 95247687.

It is not a de Polignac number, because 78674259 - 2³ = 78674251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78674251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128037 + ... + 128649.

It is an arithmetic number, because the mean of its divisors is an integer number (6631200).

Almost surely, 2^78674259 is an apocalyptic number.

78674259 is a deficient number, since it is larger than the sum of its proper divisors (27424941).

78674259 is a wasteful number, since it uses less digits than its factorization.

78674259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034.

The product of its digits is 846720, while the sum is 48.

The square root of 78674259 is about 8869.8511261464. The cubic root of 78674259 is about 428.4934823165.

The spelling of 78674259 in words is "seventy-eight million, six hundred seventy-four thousand, two hundred fifty-nine".