993561023 has 32 divisors (see below), whose sum is σ = 1255726080. Its totient is φ = 765262080.

The previous prime is 993561017. The next prime is 993561089. The reversal of 993561023 is 320165399.

It is a cyclic number.

It is not a de Polignac number, because 993561023 - 2¹⁰ = 993559999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993561823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 541718 + ... + 543548.

It is an arithmetic number, because the mean of its divisors is an integer number (39241440).

Almost surely, 2^993561023 is an apocalyptic number.

993561023 is a deficient number, since it is larger than the sum of its proper divisors (262165057).

993561023 is a wasteful number, since it uses less digits than its factorization.

993561023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 993561023 is about 31520.8030195933. The cubic root of 993561023 is about 997.8490510692.

The spelling of 993561023 in words is "nine hundred ninety-three million, five hundred sixty-one thousand, twenty-three".