36991023 has 8 divisors (see below), whose sum is σ = 49364736. Its totient is φ = 24639000.

The previous prime is 36991013. The next prime is 36991049. The reversal of 36991023 is 32019963.

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

It is not a de Polignac number, because 36991023 - 2⁴ = 36991007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36991013) 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, 903 + ... + 8648.

It is an arithmetic number, because the mean of its divisors is an integer number (6170592).

Almost surely, 2^36991023 is an apocalyptic number.

36991023 is a deficient number, since it is larger than the sum of its proper divisors (12373713).

36991023 is a wasteful number, since it uses less digits than its factorization.

36991023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10845.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 36991023 is about 6082.0245806804. The cubic root of 36991023 is about 333.1952340159.

The spelling of 36991023 in words is "thirty-six million, nine hundred ninety-one thousand, twenty-three".