612863155 has 4 divisors (see below), whose sum is σ = 735435792. Its totient is φ = 490290520.

The previous prime is 612863117. The next prime is 612863189. The reversal of 612863155 is 551368216.

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

It is not a de Polignac number, because 612863155 - 2¹¹ = 612861107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61286311 + ... + 61286320.

It is an arithmetic number, because the mean of its divisors is an integer number (183858948).

Almost surely, 2^612863155 is an apocalyptic number.

612863155 is a deficient number, since it is larger than the sum of its proper divisors (122572637).

612863155 is a wasteful number, since it uses less digits than its factorization.

612863155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122572636.

The product of its digits is 43200, while the sum is 37.

The square root of 612863155 is about 24756.0730932836. The cubic root of 612863155 is about 849.4174347280.

The spelling of 612863155 in words is "six hundred twelve million, eight hundred sixty-three thousand, one hundred fifty-five".