36661273 has 4 divisors (see below), whose sum is σ = 39994128. Its totient is φ = 33328420.

The previous prime is 36661271. The next prime is 36661309. The reversal of 36661273 is 37216663.

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 36661273 - 2¹ = 36661271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36661271) 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, 1666411 + ... + 1666432.

It is an arithmetic number, because the mean of its divisors is an integer number (9998532).

Almost surely, 2^36661273 is an apocalyptic number.

It is an amenable number.

36661273 is a deficient number, since it is larger than the sum of its proper divisors (3332855).

36661273 is a wasteful number, since it uses less digits than its factorization.

36661273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332854.

The product of its digits is 27216, while the sum is 34.

The square root of 36661273 is about 6054.8553244483. The cubic root of 36661273 is about 332.2022072250.

The spelling of 36661273 in words is "thirty-six million, six hundred sixty-one thousand, two hundred seventy-three".