888475661 has 4 divisors (see below), whose sum is σ = 892162524. Its totient is φ = 884788800.

The previous prime is 888475657. The next prime is 888475691. The reversal of 888475661 is 166574888.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 306460036 + 582015625 = 17506^2 + 24125^2 .

It is a cyclic number.

It is not a de Polignac number, because 888475661 - 2² = 888475657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (888475691) 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, 1843070 + ... + 1843551.

It is an arithmetic number, because the mean of its divisors is an integer number (223040631).

Almost surely, 2^888475661 is an apocalyptic number.

It is an amenable number.

888475661 is a deficient number, since it is larger than the sum of its proper divisors (3686863).

888475661 is a wasteful number, since it uses less digits than its factorization.

888475661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686862.

The product of its digits is 2580480, while the sum is 53.

The square root of 888475661 is about 29807.3088520249. The cubic root of 888475661 is about 961.3506960078.

The spelling of 888475661 in words is "eight hundred eighty-eight million, four hundred seventy-five thousand, six hundred sixty-one".