63870973 has 4 divisors (see below), whose sum is σ = 64205568. Its totient is φ = 63536380.

The previous prime is 63870971. The next prime is 63870997. The reversal of 63870973 is 37907836.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63870973 - 2¹ = 63870971 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 (63870971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167011 + ... + 167392.

It is an arithmetic number, because the mean of its divisors is an integer number (16051392).

Almost surely, 2^63870973 is an apocalyptic number.

It is an amenable number.

63870973 is a deficient number, since it is larger than the sum of its proper divisors (334595).

63870973 is a wasteful number, since it uses less digits than its factorization.

63870973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334594.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 63870973 is about 7991.9317439528. The cubic root of 63870973 is about 399.7310129054.

The spelling of 63870973 in words is "sixty-three million, eight hundred seventy thousand, nine hundred seventy-three".