36645943 has 4 divisors (see below), whose sum is σ = 36677368. Its totient is φ = 36614520.

The previous prime is 36645941. The next prime is 36645997. The reversal of 36645943 is 34954663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34954663 = 73 ⋅478831.

It is a cyclic number.

It is not a de Polignac number, because 36645943 - 2¹ = 36645941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36645896 and 36645905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36645941) 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, 13893 + ... + 16318.

It is an arithmetic number, because the mean of its divisors is an integer number (9169342).

Almost surely, 2^36645943 is an apocalyptic number.

36645943 is a deficient number, since it is larger than the sum of its proper divisors (31425).

36645943 is a wasteful number, since it uses less digits than its factorization.

36645943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31424.

The product of its digits is 233280, while the sum is 40.

The square root of 36645943 is about 6053.5892658819. The cubic root of 36645943 is about 332.1558970507.

The spelling of 36645943 in words is "thirty-six million, six hundred forty-five thousand, nine hundred forty-three".