850401663 has 4 divisors (see below), whose sum is σ = 1133868888. Its totient is φ = 566934440.

The previous prime is 850401637. The next prime is 850401667. The reversal of 850401663 is 366104058.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 850401663 - 2⁵ = 850401631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850401667) 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, 141733608 + ... + 141733613.

It is an arithmetic number, because the mean of its divisors is an integer number (283467222).

Almost surely, 2^850401663 is an apocalyptic number.

850401663 is a deficient number, since it is larger than the sum of its proper divisors (283467225).

850401663 is a wasteful number, since it uses less digits than its factorization.

850401663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283467224.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 850401663 is about 29161.6471242624. The cubic root of 850401663 is about 947.4174225530.

The spelling of 850401663 in words is "eight hundred fifty million, four hundred one thousand, six hundred sixty-three".