612661205 has 32 divisors (see below), whose sum is σ = 817998720. Its totient is φ = 437633280.

The previous prime is 612661183. The next prime is 612661211. The reversal of 612661205 is 502166216.

612661205 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 612661205 - 2²⁴ = 595883989 is a prime.

It is a super-2 number, since 2×612661205² = 750707504224104050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 303650 + ... + 305660.

It is an arithmetic number, because the mean of its divisors is an integer number (25562460).

Almost surely, 2^612661205 is an apocalyptic number.

612661205 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

612661205 is a deficient number, since it is larger than the sum of its proper divisors (205337515).

612661205 is a wasteful number, since it uses less digits than its factorization.

612661205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 612661205 is about 24751.9939600833. The cubic root of 612661205 is about 849.3241247751.

The spelling of 612661205 in words is "six hundred twelve million, six hundred sixty-one thousand, two hundred five".