49865663 has 4 divisors (see below), whose sum is σ = 50379840. Its totient is φ = 49351488.

The previous prime is 49865623. The next prime is 49865713. The reversal of 49865663 is 36656894.

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 49865663 - 2¹⁴ = 49849279 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 (49865623) 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, 256943 + ... + 257136.

It is an arithmetic number, because the mean of its divisors is an integer number (12594960).

Almost surely, 2^49865663 is an apocalyptic number.

49865663 is a deficient number, since it is larger than the sum of its proper divisors (514177).

49865663 is an equidigital number, since it uses as much as digits as its factorization.

49865663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514176.

The product of its digits is 933120, while the sum is 47.

The square root of 49865663 is about 7061.5623625371. The cubic root of 49865663 is about 368.0729194465.

The spelling of 49865663 in words is "forty-nine million, eight hundred sixty-five thousand, six hundred sixty-three".