36998809 has 8 divisors (see below), whose sum is σ = 38801160. Its totient is φ = 35231616.

The previous prime is 36998803. The next prime is 36998821. The reversal of 36998809 is 90889963.

It can be written as a sum of positive squares in 4 ways, for example, as 1334025 + 35664784 = 1155^2 + 5972^2 .

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 36998809 - 2¹³ = 36990617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36998803) 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, 6622 + ... + 10855.

It is an arithmetic number, because the mean of its divisors is an integer number (4850145).

Almost surely, 2^36998809 is an apocalyptic number.

It is an amenable number.

36998809 is a deficient number, since it is larger than the sum of its proper divisors (1802351).

36998809 is a wasteful number, since it uses less digits than its factorization.

36998809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17579.

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 36998809 is about 6082.6646299134. The cubic root of 36998809 is about 333.2186097422.

The spelling of 36998809 in words is "thirty-six million, nine hundred ninety-eight thousand, eight hundred nine".