63920679 has 8 divisors (see below), whose sum is σ = 85841280. Its totient is φ = 42306936.

The previous prime is 63920653. The next prime is 63920687. The reversal of 63920679 is 97602936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63920679 - 2⁹ = 63920167 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 63920679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63920609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76227 + ... + 77060.

It is an arithmetic number, because the mean of its divisors is an integer number (10730160).

Almost surely, 2^63920679 is an apocalyptic number.

63920679 is a deficient number, since it is larger than the sum of its proper divisors (21920601).

63920679 is a wasteful number, since it uses less digits than its factorization.

63920679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153429.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 63920679 is about 7995.0409004582. The cubic root of 63920679 is about 399.8346795990.

The spelling of 63920679 in words is "sixty-three million, nine hundred twenty thousand, six hundred seventy-nine".