63500381 has 8 divisors (see below), whose sum is σ = 73144320. Its totient is φ = 53999568.

The previous prime is 63500357. The next prime is 63500383. The reversal of 63500381 is 18300536.

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

It is not a de Polignac number, because 63500381 - 2¹⁸ = 63238237 is a prime.

It is a super-2 number, since 2×63500381² = 8064596774290322, which contains 22 as substring.

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 63500381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63500383) 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, 34826 + ... + 36603.

It is an arithmetic number, because the mean of its divisors is an integer number (9143040).

Almost surely, 2^63500381 is an apocalyptic number.

It is an amenable number.

63500381 is a deficient number, since it is larger than the sum of its proper divisors (9643939).

63500381 is a wasteful number, since it uses less digits than its factorization.

63500381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71563.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 63500381 is about 7968.7126312849. The cubic root of 63500381 is about 398.9564067339.

The spelling of 63500381 in words is "sixty-three million, five hundred thousand, three hundred eighty-one".