36720513 has 16 divisors (see below), whose sum is σ = 54499200. Its totient is φ = 24436080.

The previous prime is 36720511. The next prime is 36720517. The reversal of 36720513 is 31502763.

It is a happy number.

It is not a de Polignac number, because 36720513 - 2¹ = 36720511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (36720511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21843 + ... + 23463.

It is an arithmetic number, because the mean of its divisors is an integer number (3406200).

Almost surely, 2^36720513 is an apocalyptic number.

It is an amenable number.

36720513 is a deficient number, since it is larger than the sum of its proper divisors (17778687).

36720513 is a wasteful number, since it uses less digits than its factorization.

36720513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469 (or 2463 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 36720513 is about 6059.7452916769. The cubic root of 36720513 is about 332.3810432437.

The spelling of 36720513 in words is "thirty-six million, seven hundred twenty thousand, five hundred thirteen".