63017979 has 8 divisors (see below), whose sum is σ = 84138000. Its totient is φ = 41954976.

The previous prime is 63017923. The next prime is 63018001. The reversal of 63017979 is 97971036.

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

It is not a de Polignac number, because 63017979 - 2¹³ = 63009787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63017979.

It is not an unprimeable number, because it can be changed into a prime (63017579) 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, 11604 + ... + 16145.

It is an arithmetic number, because the mean of its divisors is an integer number (10517250).

Almost surely, 2^63017979 is an apocalyptic number.

63017979 is a deficient number, since it is larger than the sum of its proper divisors (21120021).

63017979 is a wasteful number, since it uses less digits than its factorization.

63017979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28509.

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 63017979 is about 7938.3864229452. The cubic root of 63017979 is about 397.9435687607.

The spelling of 63017979 in words is "sixty-three million, seventeen thousand, nine hundred seventy-nine".