63452639 has 4 divisors (see below), whose sum is σ = 64165680. Its totient is φ = 62739600.

The previous prime is 63452617. The next prime is 63452659. The reversal of 63452639 is 93625436.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63452639 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 (63452659) 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, 356387 + ... + 356564.

It is an arithmetic number, because the mean of its divisors is an integer number (16041420).

Almost surely, 2^63452639 is an apocalyptic number.

63452639 is a deficient number, since it is larger than the sum of its proper divisors (713041).

63452639 is an equidigital number, since it uses as much as digits as its factorization.

63452639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713040.

The product of its digits is 116640, while the sum is 38.

The square root of 63452639 is about 7965.7164775053. The cubic root of 63452639 is about 398.8563981362.

The spelling of 63452639 in words is "sixty-three million, four hundred fifty-two thousand, six hundred thirty-nine".