63976463 has 4 divisors (see below), whose sum is σ = 64091880. Its totient is φ = 63861048.

The previous prime is 63976453. The next prime is 63976469. The reversal of 63976463 is 36467936.

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

It is a cyclic number.

It is not a de Polignac number, because 63976463 - 2¹² = 63972367 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 (63976469) 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, 56873 + ... + 57986.

It is an arithmetic number, because the mean of its divisors is an integer number (16022970).

Almost surely, 2^63976463 is an apocalyptic number.

63976463 is a deficient number, since it is larger than the sum of its proper divisors (115417).

63976463 is a wasteful number, since it uses less digits than its factorization.

63976463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115416.

The product of its digits is 489888, while the sum is 44.

The square root of 63976463 is about 7998.5288022236. The cubic root of 63976463 is about 399.9509585709.

The spelling of 63976463 in words is "sixty-three million, nine hundred seventy-six thousand, four hundred sixty-three".