612636448 has 12 divisors (see below), whose sum is σ = 1206128070. Its totient is φ = 306318208.

The previous prime is 612636439. The next prime is 612636449. The reversal of 612636448 is 844636216.

It can be written as a sum of positive squares in only one way, i.e., 568917904 + 43718544 = 23852^2 + 6612^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 612636448.

It is not an unprimeable number, because it can be changed into a prime (612636449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9572413 + ... + 9572476.

Almost surely, 2^612636448 is an apocalyptic number.

It is an amenable number.

612636448 is a deficient number, since it is larger than the sum of its proper divisors (593491622).

612636448 is a wasteful number, since it uses less digits than its factorization.

612636448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19144899 (or 19144891 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 612636448 is about 24751.4938539071. The cubic root of 612636448 is about 849.3126845205.

The spelling of 612636448 in words is "six hundred twelve million, six hundred thirty-six thousand, four hundred forty-eight".