36777729 has 8 divisors (see below), whose sum is σ = 49064992. Its totient is φ = 24504480.

The previous prime is 36777703. The next prime is 36777731. The reversal of 36777729 is 92777763.

It is a happy number.

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

It is not a de Polignac number, because 36777729 - 2²⁰ = 35729153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36777229) 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, 8514 + ... + 12084.

It is an arithmetic number, because the mean of its divisors is an integer number (6133124).

Almost surely, 2^36777729 is an apocalyptic number.

It is an amenable number.

36777729 is a deficient number, since it is larger than the sum of its proper divisors (12287263).

36777729 is a wasteful number, since it uses less digits than its factorization.

36777729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7007.

The product of its digits is 777924, while the sum is 48.

The square root of 36777729 is about 6064.4644446150. The cubic root of 36777729 is about 332.5535866297.

The spelling of 36777729 in words is "thirty-six million, seven hundred seventy-seven thousand, seven hundred twenty-nine".