612651161 has 8 divisors (see below), whose sum is σ = 641946624. Its totient is φ = 583577280.

The previous prime is 612651139. The next prime is 612651163. The reversal of 612651161 is 161156216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 612651161 - 2⁶ = 612651097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612651163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49721 + ... + 60806.

It is an arithmetic number, because the mean of its divisors is an integer number (80243328).

Almost surely, 2^612651161 is an apocalyptic number.

It is an amenable number.

612651161 is a deficient number, since it is larger than the sum of its proper divisors (29295463).

612651161 is a wasteful number, since it uses less digits than its factorization.

612651161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110791.

The product of its digits is 2160, while the sum is 29.

The square root of 612651161 is about 24751.7910665067. The cubic root of 612651161 is about 849.3194834616.

It can be divided in two parts, 61265 and 1161, that added together give a palindrome (62426).

The spelling of 612651161 in words is "six hundred twelve million, six hundred fifty-one thousand, one hundred sixty-one".