617641642 has 16 divisors (see below), whose sum is σ = 934103232. Its totient is φ = 306280800.

The previous prime is 617641601. The next prime is 617641649. The reversal of 617641642 is 246146716.

It is not an unprimeable number, because it can be changed into a prime (617641649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248518 + ... + 250990.

It is an arithmetic number, because the mean of its divisors is an integer number (58381452).

Almost surely, 2^617641642 is an apocalyptic number.

617641642 is a deficient number, since it is larger than the sum of its proper divisors (316461590).

617641642 is a wasteful number, since it uses less digits than its factorization.

617641642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453.

The product of its digits is 48384, while the sum is 37.

The square root of 617641642 is about 24852.3971077238. The cubic root of 617641642 is about 851.6193544940.

The spelling of 617641642 in words is "six hundred seventeen million, six hundred forty-one thousand, six hundred forty-two".