63870413 has 4 divisors (see below), whose sum is σ = 63930048. Its totient is φ = 63810780.

The previous prime is 63870397. The next prime is 63870421. The reversal of 63870413 is 31407836.

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 63870413 - 2⁴ = 63870397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63870413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63870493) 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, 28181 + ... + 30362.

It is an arithmetic number, because the mean of its divisors is an integer number (15982512).

Almost surely, 2^63870413 is an apocalyptic number.

It is an amenable number.

63870413 is a deficient number, since it is larger than the sum of its proper divisors (59635).

63870413 is a wasteful number, since it uses less digits than its factorization.

63870413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59634.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 63870413 is about 7991.8967085417. The cubic root of 63870413 is about 399.7298446646.

The spelling of 63870413 in words is "sixty-three million, eight hundred seventy thousand, four hundred thirteen".