50640678 has 36 divisors (see below), whose sum is σ = 120608124. Its totient is φ = 15345000.

The previous prime is 50640673. The next prime is 50640697. The reversal of 50640678 is 87604605.

It is a happy number.

50640678 is a `hidden beast` number, since 5 + 0 + 640 + 6 + 7 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50640673) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9448 + ... + 13803.

Almost surely, 2^50640678 is an apocalyptic number.

50640678 is an abundant number, since it is smaller than the sum of its proper divisors (69967446).

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

50640678 is a wasteful number, since it uses less digits than its factorization.

50640678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23281 (or 23267 counting only the distinct ones).

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

The square root of 50640678 is about 7116.2263876299. The cubic root of 50640678 is about 369.9699951320.

The spelling of 50640678 in words is "fifty million, six hundred forty thousand, six hundred seventy-eight".