612206155 has 24 divisors (see below), whose sum is σ = 817790400. Its totient is φ = 439570560.

The previous prime is 612206129. The next prime is 612206191. The reversal of 612206155 is 551602216.

612206155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 612206155 - 2⁵ = 612206123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41391 + ... + 54199.

It is an arithmetic number, because the mean of its divisors is an integer number (34074600).

Almost surely, 2^612206155 is an apocalyptic number.

612206155 is a deficient number, since it is larger than the sum of its proper divisors (205584245).

612206155 is a wasteful number, since it uses less digits than its factorization.

612206155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12915 (or 12904 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 612206155 is about 24742.8000638570. The cubic root of 612206155 is about 849.1137960944.

The spelling of 612206155 in words is "six hundred twelve million, two hundred six thousand, one hundred fifty-five".