612626240 has 28 divisors (see below), whose sum is σ = 1458816996. Its totient is φ = 245050368.

The previous prime is 612626239. The next prime is 612626251. The reversal of 612626240 is 42626216.

It can be written as a sum of positive squares in 2 ways, for example, as 77721856 + 534904384 = 8816^2 + 23128^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 956909 + ... + 957548.

It is an arithmetic number, because the mean of its divisors is an integer number (52100607).

Almost surely, 2^612626240 is an apocalyptic number.

It is an amenable number.

612626240 is an abundant number, since it is smaller than the sum of its proper divisors (846190756).

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

612626240 is a wasteful number, since it uses less digits than its factorization.

612626240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914474 (or 1914464 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 612626240 is about 24751.2876432722. The cubic root of 612626240 is about 849.3079672954.

The spelling of 612626240 in words is "six hundred twelve million, six hundred twenty-six thousand, two hundred forty".