617911393 has 16 divisors (see below), whose sum is σ = 714960000. Its totient is φ = 527788800.

The previous prime is 617911391. The next prime is 617911403. The reversal of 617911393 is 393119716.

It is not a de Polignac number, because 617911393 - 2¹ = 617911391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (617911391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121108 + ... + 126106.

It is an arithmetic number, because the mean of its divisors is an integer number (44685000).

Almost surely, 2^617911393 is an apocalyptic number.

It is an amenable number.

617911393 is a deficient number, since it is larger than the sum of its proper divisors (97048607).

617911393 is a wasteful number, since it uses less digits than its factorization.

617911393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5688.

The product of its digits is 30618, while the sum is 40.

The square root of 617911393 is about 24857.8235772965. The cubic root of 617911393 is about 851.7433162011.

The spelling of 617911393 in words is "six hundred seventeen million, nine hundred eleven thousand, three hundred ninety-three".