63687373 has 8 divisors (see below), whose sum is σ = 68176800. Its totient is φ = 59311728.

The previous prime is 63687367. The next prime is 63687401. The reversal of 63687373 is 37378636.

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

It is a cyclic number.

It is not a de Polignac number, because 63687373 - 2⁵ = 63687341 is a prime.

It is a super-2 number, since 2×63687373² = 8112162959282258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63687313) 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, 27286 + ... + 29527.

It is an arithmetic number, because the mean of its divisors is an integer number (8522100).

Almost surely, 2^63687373 is an apocalyptic number.

It is an amenable number.

63687373 is a deficient number, since it is larger than the sum of its proper divisors (4489427).

63687373 is a wasteful number, since it uses less digits than its factorization.

63687373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56891.

The product of its digits is 381024, while the sum is 43.

The square root of 63687373 is about 7980.4368928023. The cubic root of 63687373 is about 399.3476303631.

The spelling of 63687373 in words is "sixty-three million, six hundred eighty-seven thousand, three hundred seventy-three".