63860891 has 16 divisors (see below), whose sum is σ = 69696000. Its totient is φ = 58278528.

The previous prime is 63860887. The next prime is 63860893. The reversal of 63860891 is 19806836.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 63860891 - 2² = 63860887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63860893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145250 + ... + 145688.

It is an arithmetic number, because the mean of its divisors is an integer number (4356000).

Almost surely, 2^63860891 is an apocalyptic number.

63860891 is a deficient number, since it is larger than the sum of its proper divisors (5835109).

63860891 is a wasteful number, since it uses less digits than its factorization.

63860891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 63860891 is about 7991.3009579167. The cubic root of 63860891 is about 399.7099793542.

The spelling of 63860891 in words is "sixty-three million, eight hundred sixty thousand, eight hundred ninety-one".