612908604 has 144 divisors (see below), whose sum is σ = 1947918336. Its totient is φ = 157852800.

The previous prime is 612908561. The next prime is 612908609. The reversal of 612908604 is 406809216.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612908609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 351174 + ... + 352914.

Almost surely, 2^612908604 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 612908604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (973959168).

612908604 is an abundant number, since it is smaller than the sum of its proper divisors (1335009732).

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

612908604 is a wasteful number, since it uses less digits than its factorization.

612908604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896 (or 1891 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 612908604 is about 24756.9910126413. The cubic root of 612908604 is about 849.4384313775.

The spelling of 612908604 in words is "six hundred twelve million, nine hundred eight thousand, six hundred four".