523386634 has 4 divisors (see below), whose sum is σ = 785079954. Its totient is φ = 261693316.

The previous prime is 523386631. The next prime is 523386641. The reversal of 523386634 is 436683325.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 424483609 + 98903025 = 20603^2 + 9945^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (523386631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130846657 + ... + 130846660.

Almost surely, 2^523386634 is an apocalyptic number.

523386634 is a deficient number, since it is larger than the sum of its proper divisors (261693320).

523386634 is a wasteful number, since it uses less digits than its factorization.

523386634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261693319.

The product of its digits is 311040, while the sum is 40.

The square root of 523386634 is about 22877.6448525629. The cubic root of 523386634 is about 805.8871096973.

The spelling of 523386634 in words is "five hundred twenty-three million, three hundred eighty-six thousand, six hundred thirty-four".