612626144 has 48 divisors (see below), whose sum is σ = 1375306128. Its totient is φ = 266115072.

The previous prime is 612626083. The next prime is 612626159. The reversal of 612626144 is 441626216.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 612626144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36242 + ... + 50385.

It is an arithmetic number, because the mean of its divisors is an integer number (28652211).

Almost surely, 2^612626144 is an apocalyptic number.

It is an amenable number.

612626144 is an abundant number, since it is smaller than the sum of its proper divisors (762679984).

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

612626144 is a wasteful number, since it uses less digits than its factorization.

612626144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86667 (or 86659 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 612626144 is about 24751.2857039791. The cubic root of 612626144 is about 849.3079229325.

The spelling of 612626144 in words is "six hundred twelve million, six hundred twenty-six thousand, one hundred forty-four".