617691072 has 28 divisors (see below), whose sum is σ = 1634308136. Its totient is φ = 205896960.

The previous prime is 617691031. The next prime is 617691077. The reversal of 617691072 is 270196716.

It is a self number, because there is not a number n which added to its sum of digits gives 617691072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617691077) by changing a digit.

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, 1608379 + ... + 1608762.

Almost surely, 2^617691072 is an apocalyptic number.

It is an amenable number.

617691072 is an abundant number, since it is smaller than the sum of its proper divisors (1016617064).

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

617691072 is a wasteful number, since it uses less digits than its factorization.

617691072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217156 (or 3217146 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 617691072 is about 24853.3915593023. The cubic root of 617691072 is about 851.6420723176.

The spelling of 617691072 in words is "six hundred seventeen million, six hundred ninety-one thousand, seventy-two".