635223723 has 16 divisors (see below), whose sum is σ = 860023296. Its totient is φ = 416969280.

The previous prime is 635223671. The next prime is 635223731. The reversal of 635223723 is 327322536.

It is not a de Polignac number, because 635223723 - 2²² = 631029419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (635223793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218586 + ... + 221472.

It is an arithmetic number, because the mean of its divisors is an integer number (53751456).

Almost surely, 2^635223723 is an apocalyptic number.

635223723 is a deficient number, since it is larger than the sum of its proper divisors (224799573).

635223723 is a wasteful number, since it uses less digits than its factorization.

635223723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3994.

The product of its digits is 45360, while the sum is 33.

The square root of 635223723 is about 25203.6450340025. The cubic root of 635223723 is about 859.6247339667.

The spelling of 635223723 in words is "six hundred thirty-five million, two hundred twenty-three thousand, seven hundred twenty-three".