506850991 has 8 divisors (see below), whose sum is σ = 511971264. Its totient is φ = 501742080.

The previous prime is 506850959. The next prime is 506851001. The reversal of 506850991 is 199058605.

It is a happy number.

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 506850991 - 2⁵ = 506850959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506850691) 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, 108106 + ... + 112696.

It is an arithmetic number, because the mean of its divisors is an integer number (63996408).

Almost surely, 2^506850991 is an apocalyptic number.

506850991 is a deficient number, since it is larger than the sum of its proper divisors (5120273).

506850991 is a wasteful number, since it uses less digits than its factorization.

506850991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5681.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 506850991 is about 22513.3513942283. The cubic root of 506850991 is about 797.3091840131.

The spelling of 506850991 in words is "five hundred six million, eight hundred fifty thousand, nine hundred ninety-one".