617642512 has 40 divisors (see below), whose sum is σ = 1240650752. Its totient is φ = 297561600.

The previous prime is 617642489. The next prime is 617642539. The reversal of 617642512 is 215246716.

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 7 ways as a sum of consecutive naturals, for example, 116953 + ... + 122119.

Almost surely, 2^617642512 is an apocalyptic number.

617642512 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 617642512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (620325376).

617642512 is an abundant number, since it is smaller than the sum of its proper divisors (623008240).

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

617642512 is a wasteful number, since it uses less digits than its factorization.

617642512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5447 (or 5441 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 617642512 is about 24852.4146110594. The cubic root of 617642512 is about 851.6197543528.

The spelling of 617642512 in words is "six hundred seventeen million, six hundred forty-two thousand, five hundred twelve".