612975878 has 8 divisors (see below), whose sum is σ = 921970272. Its totient is φ = 305652456.

The previous prime is 612975877. The next prime is 612975887. The reversal of 612975878 is 878579216.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612975877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416825 + ... + 418292.

It is an arithmetic number, because the mean of its divisors is an integer number (115246284).

Almost surely, 2^612975878 is an apocalyptic number.

612975878 is a deficient number, since it is larger than the sum of its proper divisors (308994394).

612975878 is a wasteful number, since it uses less digits than its factorization.

612975878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835486.

The product of its digits is 1693440, while the sum is 53.

The square root of 612975878 is about 24758.3496622857. The cubic root of 612975878 is about 849.4695088933.

The spelling of 612975878 in words is "six hundred twelve million, nine hundred seventy-five thousand, eight hundred seventy-eight".