612747872 has 72 divisors (see below), whose sum is σ = 1395941400. Its totient is φ = 263831040.

The previous prime is 612747857. The next prime is 612747901. The reversal of 612747872 is 278747216.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69404 + ... + 77732.

It is an arithmetic number, because the mean of its divisors is an integer number (19388075).

Almost surely, 2^612747872 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 612747872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697970700).

612747872 is an abundant number, since it is smaller than the sum of its proper divisors (783193528).

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

612747872 is a wasteful number, since it uses less digits than its factorization.

612747872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8380 (or 8361 counting only the distinct ones).

The product of its digits is 263424, while the sum is 44.

The square root of 612747872 is about 24753.7446056147. The cubic root of 612747872 is about 849.3641713254.

The spelling of 612747872 in words is "six hundred twelve million, seven hundred forty-seven thousand, eight hundred seventy-two".