523688890 has 16 divisors (see below), whose sum is σ = 973048320. Its totient is φ = 202718160.

The previous prime is 523688839. The next prime is 523688947. The reversal of 523688890 is 98886325.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844350 + ... + 844969.

It is an arithmetic number, because the mean of its divisors is an integer number (60815520).

Almost surely, 2^523688890 is an apocalyptic number.

523688890 is a deficient number, since it is larger than the sum of its proper divisors (449359430).

523688890 is a wasteful number, since it uses less digits than its factorization.

523688890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689357.

The product of its (nonzero) digits is 829440, while the sum is 49.

The square root of 523688890 is about 22884.2498238417. The cubic root of 523688890 is about 806.0422132246.

The spelling of 523688890 in words is "five hundred twenty-three million, six hundred eighty-eight thousand, eight hundred ninety".