612117806 has 4 divisors (see below), whose sum is σ = 918176712. Its totient is φ = 306058902.

The previous prime is 612117797. The next prime is 612117817. The reversal of 612117806 is 608711216.

It is a happy number.

612117806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153029450 + ... + 153029453.

It is an arithmetic number, because the mean of its divisors is an integer number (229544178).

Almost surely, 2^612117806 is an apocalyptic number.

612117806 is a deficient number, since it is larger than the sum of its proper divisors (306058906).

612117806 is a wasteful number, since it uses less digits than its factorization.

612117806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306058905.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 612117806 is about 24741.0146517882. The cubic root of 612117806 is about 849.0729482182.

The spelling of 612117806 in words is "six hundred twelve million, one hundred seventeen thousand, eight hundred six".