63851364 has 18 divisors (see below), whose sum is σ = 161402150. Its totient is φ = 21283776.

The previous prime is 63851353. The next prime is 63851377. The reversal of 63851364 is 46315836.

63851364 is a `hidden beast` number, since 638 + 5 + 13 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 56881764 + 6969600 = 7542^2 + 2640^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1773649 = 63851364 / (6 + 3 + 8 + 5 + 1 + 3 + 6 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 886789 + ... + 886860.

Almost surely, 2^63851364 is an apocalyptic number.

It is an amenable number.

63851364 is an abundant number, since it is smaller than the sum of its proper divisors (97550786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63851364 is a wasteful number, since it uses less digits than its factorization.

63851364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773659 (or 1773654 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 63851364 is about 7990.7048500117. The cubic root of 63851364 is about 399.6901016362.

The spelling of 63851364 in words is "sixty-three million, eight hundred fifty-one thousand, three hundred sixty-four".