612251136 has 480 divisors, whose sum is σ = 2264021760. Its totient is φ = 161243136.

The previous prime is 612251119. The next prime is 612251149. The reversal of 612251136 is 631152216.

612251136 is a `hidden beast` number, since 612 + 2 + 5 + 11 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16547310 + ... + 16547346.

It is an arithmetic number, because the mean of its divisors is an integer number (4716712).

Almost surely, 2^612251136 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 612251136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1132010880).

612251136 is an abundant number, since it is smaller than the sum of its proper divisors (1651770624).

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

612251136 is an equidigital number, since it uses as much as digits as its factorization.

612251136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 68 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 612251136 is about 24743.7090186577. The cubic root of 612251136 is about 849.1345914055.

The spelling of 612251136 in words is "six hundred twelve million, two hundred fifty-one thousand, one hundred thirty-six".