63612823 has 4 divisors (see below), whose sum is σ = 63631800. Its totient is φ = 63593848.

The previous prime is 63612821. The next prime is 63612833. The reversal of 63612823 is 32821636.

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 63612823 - 2¹ = 63612821 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 (63612821) 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, 2965 + ... + 11662.

It is an arithmetic number, because the mean of its divisors is an integer number (15907950).

Almost surely, 2^63612823 is an apocalyptic number.

63612823 is a deficient number, since it is larger than the sum of its proper divisors (18977).

63612823 is a wasteful number, since it uses less digits than its factorization.

63612823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18976.

The product of its digits is 10368, while the sum is 31.

The square root of 63612823 is about 7975.7647282251. The cubic root of 63612823 is about 399.1917491765.

The spelling of 63612823 in words is "sixty-three million, six hundred twelve thousand, eight hundred twenty-three".