36391663 has 24 divisors (see below), whose sum is σ = 46687104. Its totient is φ = 28047600.

The previous prime is 36391657. The next prime is 36391697. The reversal of 36391663 is 36619363.

It is not a de Polignac number, because 36391663 - 2¹⁷ = 36260591 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 (36391633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57358 + ... + 57988.

It is an arithmetic number, because the mean of its divisors is an integer number (1945296).

Almost surely, 2^36391663 is an apocalyptic number.

36391663 is a deficient number, since it is larger than the sum of its proper divisors (10295441).

36391663 is a wasteful number, since it uses less digits than its factorization.

36391663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 756 counting only the distinct ones).

The product of its digits is 52488, while the sum is 37.

The square root of 36391663 is about 6032.5502898857. The cubic root of 36391663 is about 331.3858553694.

The spelling of 36391663 in words is "thirty-six million, three hundred ninety-one thousand, six hundred sixty-three".