612117612 has 36 divisors (see below), whose sum is σ = 1555169616. Its totient is φ = 203001120.

The previous prime is 612117559. The next prime is 612117619. The reversal of 612117612 is 216711216.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (612117619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36064 + ... + 50247.

It is an arithmetic number, because the mean of its divisors is an integer number (43199156).

Almost surely, 2^612117612 is an apocalyptic number.

It is an amenable number.

612117612 is an abundant number, since it is smaller than the sum of its proper divisors (943052004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612117612 is a wasteful number, since it uses less digits than its factorization.

612117612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86518 (or 86513 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 612117612 is about 24741.0107311726. The cubic root of 612117612 is about 849.0728585186.

Adding to 612117612 its reverse (216711216), we get a palindrome (828828828).

The spelling of 612117612 in words is "six hundred twelve million, one hundred seventeen thousand, six hundred twelve".