63967495 has 4 divisors (see below), whose sum is σ = 76761000. Its totient is φ = 51173992.

The previous prime is 63967493. The next prime is 63967499. The reversal of 63967495 is 59476936.

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 63967495 - 2¹ = 63967493 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63967493) 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, 6396745 + ... + 6396754.

It is an arithmetic number, because the mean of its divisors is an integer number (19190250).

Almost surely, 2^63967495 is an apocalyptic number.

63967495 is a deficient number, since it is larger than the sum of its proper divisors (12793505).

63967495 is a wasteful number, since it uses less digits than its factorization.

63967495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12793504.

The product of its digits is 1224720, while the sum is 49.

The square root of 63967495 is about 7997.9681794816. The cubic root of 63967495 is about 399.9322697822.

The spelling of 63967495 in words is "sixty-three million, nine hundred sixty-seven thousand, four hundred ninety-five".