63869806 has 64 divisors (see below), whose sum is σ = 130991616. Its totient is φ = 22550400.

The previous prime is 63869791. The next prime is 63869809. The reversal of 63869806 is 60896836.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63869809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121861 + ... + 122383.

It is an arithmetic number, because the mean of its divisors is an integer number (2046744).

Almost surely, 2^63869806 is an apocalyptic number.

63869806 is an abundant number, since it is smaller than the sum of its proper divisors (67121810).

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

63869806 is a wasteful number, since it uses less digits than its factorization.

63869806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 63869806 is about 7991.8587324852. The cubic root of 63869806 is about 399.7285783674.

The spelling of 63869806 in words is "sixty-three million, eight hundred sixty-nine thousand, eight hundred six".