63982609 has 4 divisors (see below), whose sum is σ = 65067120. Its totient is φ = 62898100.

The previous prime is 63982601. The next prime is 63982637. The reversal of 63982609 is 90628936.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63982609 - 2³ = 63982601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63982601) 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, 542167 + ... + 542284.

It is an arithmetic number, because the mean of its divisors is an integer number (16266780).

Almost surely, 2^63982609 is an apocalyptic number.

It is an amenable number.

63982609 is a deficient number, since it is larger than the sum of its proper divisors (1084511).

63982609 is a wasteful number, since it uses less digits than its factorization.

63982609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084510.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 63982609 is about 7998.9129886504. The cubic root of 63982609 is about 399.9637654677.

The spelling of 63982609 in words is "sixty-three million, nine hundred eighty-two thousand, six hundred nine".