634523 has 2 divisors, whose sum is σ = 634524. Its totient is φ = 634522.

The previous prime is 634519. The next prime is 634531. The reversal of 634523 is 325436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634523 - 2² = 634519 is a prime.

It is a d-powerful number, because it can be written as 6⁷ + 3¹¹ + 5 + 4⁴ + 2⁵ + 3¹¹ .

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (634573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317261 + 317262.

It is an arithmetic number, because the mean of its divisors is an integer number (317262).

2⁶³⁴⁵²³ is an apocalyptic number.

634523 is a deficient number, since it is larger than the sum of its proper divisors (1).

634523 is an equidigital number, since it uses as much as digits as its factorization.

634523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 23.

The square root of 634523 is about 796.5695198788. The cubic root of 634523 is about 85.9308530176.

Adding to 634523 its reverse (325436), we get a palindrome (959959).

The spelling of 634523 in words is "six hundred thirty-four thousand, five hundred twenty-three".