612696312 has 96 divisors (see below), whose sum is σ = 1728679680. Its totient is φ = 203303520.

The previous prime is 612696263. The next prime is 612696313. The reversal of 612696312 is 213696216.

It is a happy number.

612696312 is a `hidden beast` number, since 6 + 12 + 6 + 9 + 631 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612696313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 526243 + ... + 527405.

It is an arithmetic number, because the mean of its divisors is an integer number (18007080).

Almost surely, 2^612696312 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 612696312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (864339840).

612696312 is an abundant number, since it is smaller than the sum of its proper divisors (1115983368).

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

612696312 is a wasteful number, since it uses less digits than its factorization.

612696312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455 (or 1439 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 612696312 is about 24752.7031251134. The cubic root of 612696312 is about 849.3403472552.

The spelling of 612696312 in words is "six hundred twelve million, six hundred ninety-six thousand, three hundred twelve".