635574023 has 4 divisors (see below), whose sum is σ = 726370320. Its totient is φ = 544777728.

The previous prime is 635573999. The next prime is 635574061. The reversal of 635574023 is 320475536.

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

It is a cyclic number.

It is not a de Polignac number, because 635574023 - 2⁸ = 635573767 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 (635574523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45398138 + ... + 45398151.

It is an arithmetic number, because the mean of its divisors is an integer number (181592580).

Almost surely, 2^635574023 is an apocalyptic number.

635574023 is a deficient number, since it is larger than the sum of its proper divisors (90796297).

635574023 is an equidigital number, since it uses as much as digits as its factorization.

635574023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90796296.

The product of its (nonzero) digits is 75600, while the sum is 35.

The square root of 635574023 is about 25210.5934678262. The cubic root of 635574023 is about 859.7827209338.

The spelling of 635574023 in words is "six hundred thirty-five million, five hundred seventy-four thousand, twenty-three".