612800887 has 4 divisors (see below), whose sum is σ = 648848016. Its totient is φ = 576753760.

The previous prime is 612800861. The next prime is 612800917. The reversal of 612800887 is 788008216.

612800887 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 cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612800887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612800087) 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, 18023539 + ... + 18023572.

It is an arithmetic number, because the mean of its divisors is an integer number (162212004).

Almost surely, 2^612800887 is an apocalyptic number.

612800887 is a deficient number, since it is larger than the sum of its proper divisors (36047129).

612800887 is a wasteful number, since it uses less digits than its factorization.

612800887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36047128.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 612800887 is about 24754.8154305380. The cubic root of 612800887 is about 849.3886663067.

The spelling of 612800887 in words is "six hundred twelve million, eight hundred thousand, eight hundred eighty-seven".