612644032 has 224 divisors, whose sum is σ = 1667280384. Its totient is φ = 215654400.

The previous prime is 612643991. The next prime is 612644033. The reversal of 612644032 is 230446216.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (612644033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4676607 + ... + 4676737.

It is an arithmetic number, because the mean of its divisors is an integer number (7443216).

Almost surely, 2^612644032 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 612644032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833640192).

612644032 is an abundant number, since it is smaller than the sum of its proper divisors (1054636352).

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

612644032 is a wasteful number, since it uses less digits than its factorization.

612644032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 612644032 is about 24751.6470563072. The cubic root of 612644032 is about 849.3161891334.

The spelling of 612644032 in words is "six hundred twelve million, six hundred forty-four thousand, thirty-two".