50640665 has 8 divisors (see below), whose sum is σ = 60808320. Its totient is φ = 40486192.

The previous prime is 50640661. The next prime is 50640673. The reversal of 50640665 is 56604605.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50640665 - 2² = 50640661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50640661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10166 + ... + 14304.

It is an arithmetic number, because the mean of its divisors is an integer number (7601040).

Almost surely, 2^50640665 is an apocalyptic number.

It is an amenable number.

50640665 is a deficient number, since it is larger than the sum of its proper divisors (10167655).

50640665 is a wasteful number, since it uses less digits than its factorization.

50640665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6591.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 50640665 is about 7116.2254742244. The cubic root of 50640665 is about 369.9699634736.

The spelling of 50640665 in words is "fifty million, six hundred forty thousand, six hundred sixty-five".