78579265 has 8 divisors (see below), whose sum is σ = 97337088. Its totient is φ = 60835440.

The previous prime is 78579251. The next prime is 78579271. The reversal of 78579265 is 56297587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-78579265 is a prime.

It is a super-3 number, since 3×78579265³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253327 + ... + 253636.

It is an arithmetic number, because the mean of its divisors is an integer number (12167136).

Almost surely, 2^78579265 is an apocalyptic number.

It is an amenable number.

78579265 is a deficient number, since it is larger than the sum of its proper divisors (18757823).

78579265 is a wasteful number, since it uses less digits than its factorization.

78579265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506999.

The product of its digits is 1058400, while the sum is 49.

The square root of 78579265 is about 8864.4946274449. The cubic root of 78579265 is about 428.3209536141.

The spelling of 78579265 in words is "seventy-eight million, five hundred seventy-nine thousand, two hundred sixty-five".