63953579 has 4 divisors (see below), whose sum is σ = 64551384. Its totient is φ = 63355776.

The previous prime is 63953569. The next prime is 63953611. The reversal of 63953579 is 97535936.

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-63953579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63953509) 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, 298742 + ... + 298955.

It is an arithmetic number, because the mean of its divisors is an integer number (16137846).

Almost surely, 2^63953579 is an apocalyptic number.

63953579 is a deficient number, since it is larger than the sum of its proper divisors (597805).

63953579 is a wasteful number, since it uses less digits than its factorization.

63953579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597804.

The product of its digits is 765450, while the sum is 47.

The square root of 63953579 is about 7997.0981612082. The cubic root of 63953579 is about 399.9032661916.

The spelling of 63953579 in words is "sixty-three million, nine hundred fifty-three thousand, five hundred seventy-nine".