612912 has 30 divisors (see below), whose sum is σ = 1597492. Its totient is φ = 202496.

The previous prime is 612889. The next prime is 612923. The reversal of 612912 is 219216.

It is a super-2 number, since 2×612912² = 751322239488, which contains 22 as substring.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5368 + ... + 5480.

2⁶¹²⁹¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798746).

612912 is an abundant number, since it is smaller than the sum of its proper divisors (984580).

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

612912 is a wasteful number, since it uses less digits than its factorization.

612912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 118 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

The square root of 612912 is about 782.8869650211. The cubic root of 612912 is about 84.9440000229.

The spelling of 612912 in words is "six hundred twelve thousand, nine hundred twelve".