612636 has 24 divisors (see below), whose sum is σ = 1505280. Its totient is φ = 193392.

The previous prime is 612613. The next prime is 612637. The reversal of 612636 is 636216.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612637) by changing a digit.

612636 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1116 + ... + 1571.

It is an arithmetic number, because the mean of its divisors is an integer number (62720).

2⁶¹²⁶³⁶ is an apocalyptic number.

It is an amenable number.

612636 is an abundant number, since it is smaller than the sum of its proper divisors (892644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612636 is a wasteful number, since it uses less digits than its factorization.

612636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713 (or 2711 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

The square root of 612636 is about 782.7106745152. The cubic root of 612636 is about 84.9312477496.

The spelling of 612636 in words is "six hundred twelve thousand, six hundred thirty-six".