50686764 has 12 divisors (see below), whose sum is σ = 118269144. Its totient is φ = 16895584.

The previous prime is 50686763. The next prime is 50686771. The reversal of 50686764 is 46768605.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (50686763) 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, 2111937 + ... + 2111960.

It is an arithmetic number, because the mean of its divisors is an integer number (9855762).

Almost surely, 2^50686764 is an apocalyptic number.

It is an amenable number.

50686764 is an abundant number, since it is smaller than the sum of its proper divisors (67582380).

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

50686764 is a wasteful number, since it uses less digits than its factorization.

50686764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4223904 (or 4223902 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 50686764 is about 7119.4637438504. The cubic root of 50686764 is about 370.0821925997.

The spelling of 50686764 in words is "fifty million, six hundred eighty-six thousand, seven hundred sixty-four".