612780032 has 36 divisors (see below), whose sum is σ = 1227504915. Its totient is φ = 305829888.

The previous prime is 612780019. The next prime is 612780043. The reversal of 612780032 is 230087216.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 306390016 + 306390016 = 17504^2 + 17504^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=17504.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 612779977 and 612780004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1119983 + ... + 1120529.

Almost surely, 2^612780032 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 612780032

612780032 is an abundant number, since it is smaller than the sum of its proper divisors (614724883).

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

612780032 is an frugal number, since it uses more digits than its factorization.

612780032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 612780032 is about 24754.3941957787. The cubic root of 612780032 is about 849.3790306584.

The spelling of 612780032 in words is "six hundred twelve million, seven hundred eighty thousand, thirty-two".