36705989 has 4 divisors (see below), whose sum is σ = 36852480. Its totient is φ = 36559500.

The previous prime is 36705983. The next prime is 36706031. The reversal of 36705989 is 98950763.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 36705989 - 2¹² = 36701893 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 (36705983) 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, 72869 + ... + 73370.

It is an arithmetic number, because the mean of its divisors is an integer number (9213120).

Almost surely, 2^36705989 is an apocalyptic number.

It is an amenable number.

36705989 is a deficient number, since it is larger than the sum of its proper divisors (146491).

36705989 is a wasteful number, since it uses less digits than its factorization.

36705989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146490.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 36705989 is about 6058.5467729481. The cubic root of 36705989 is about 332.3372154348.

The spelling of 36705989 in words is "thirty-six million, seven hundred five thousand, nine hundred eighty-nine".