36990081 has 32 divisors (see below), whose sum is σ = 56709120. Its totient is φ = 23816592.

The previous prime is 36990073. The next prime is 36990089. The reversal of 36990081 is 18009963.

It is an interprime number because it is at equal distance from previous prime (36990073) and next prime (36990089).

It is not a de Polignac number, because 36990081 - 2³ = 36990073 is a prime.

It is a super-2 number, since 2×36990081² = 2736532184773122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36990089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130566 + ... + 130848.

It is an arithmetic number, because the mean of its divisors is an integer number (1772160).

Almost surely, 2^36990081 is an apocalyptic number.

It is an amenable number.

36990081 is a deficient number, since it is larger than the sum of its proper divisors (19719039).

36990081 is a wasteful number, since it uses less digits than its factorization.

36990081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 36990081 is about 6081.9471388693. The cubic root of 36990081 is about 333.1924056488.

The spelling of 36990081 in words is "thirty-six million, nine hundred ninety thousand, eighty-one".