78572859 has 8 divisors (see below), whose sum is σ = 105296400. Its totient is φ = 52115616.

The previous prime is 78572831. The next prime is 78572869. The reversal of 78572859 is 95827587.

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

It is not a de Polignac number, because 78572859 - 2⁷ = 78572731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78572869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65884 + ... + 67065.

It is an arithmetic number, because the mean of its divisors is an integer number (13162050).

Almost surely, 2^78572859 is an apocalyptic number.

78572859 is a deficient number, since it is larger than the sum of its proper divisors (26723541).

78572859 is a wasteful number, since it uses less digits than its factorization.

78572859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133149.

The product of its digits is 1411200, while the sum is 51.

The square root of 78572859 is about 8864.1332909653. The cubic root of 78572859 is about 428.3093139931.

The spelling of 78572859 in words is "seventy-eight million, five hundred seventy-two thousand, eight hundred fifty-nine".