36720905 has 8 divisors (see below), whose sum is σ = 47454792. Its totient is φ = 27116928.

The previous prime is 36720877. The next prime is 36720917. The reversal of 36720905 is 50902763.

It can be written as a sum of positive squares in 4 ways, for example, as 190969 + 36529936 = 437^2 + 6044^2 .

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 36720905 - 2¹⁶ = 36655369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282404 + ... + 282533.

It is an arithmetic number, because the mean of its divisors is an integer number (5931849).

Almost surely, 2^36720905 is an apocalyptic number.

It is an amenable number.

36720905 is a deficient number, since it is larger than the sum of its proper divisors (10733887).

36720905 is a wasteful number, since it uses less digits than its factorization.

36720905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564955.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 36720905 is about 6059.7776361844. Note that the first 3 decimals coincide. The cubic root of 36720905 is about 332.3822259878.

The spelling of 36720905 in words is "thirty-six million, seven hundred twenty thousand, nine hundred five".