50640786 has 48 divisors (see below), whose sum is σ = 129729600. Its totient is φ = 13968864.

The previous prime is 50640767. The next prime is 50640791. The reversal of 50640786 is 68704605.

It is a happy number.

50640786 is a `hidden beast` number, since 5 + 0 + 640 + 7 + 8 + 6 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 50640786.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3276 + ... + 10583.

It is an arithmetic number, because the mean of its divisors is an integer number (2702700).

Almost surely, 2^50640786 is an apocalyptic number.

50640786 is an abundant number, since it is smaller than the sum of its proper divisors (79088814).

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

50640786 is a wasteful number, since it uses less digits than its factorization.

50640786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13903 (or 13900 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 50640786 is about 7116.2339759173. The cubic root of 50640786 is about 369.9702581401.

The spelling of 50640786 in words is "fifty million, six hundred forty thousand, seven hundred eighty-six".