36721163 has 4 divisors (see below), whose sum is σ = 37987440. Its totient is φ = 35454888.

The previous prime is 36721151. The next prime is 36721171. The reversal of 36721163 is 36112763.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36112763 = 2393 ⋅15091.

It is a cyclic number.

It is not a de Polignac number, because 36721163 - 2²⁰ = 35672587 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1266247 = 36721163 / (3 + 6 + 7 + 2 + 1 + 1 + 6 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36721123) 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, 633095 + ... + 633152.

It is an arithmetic number, because the mean of its divisors is an integer number (9496860).

Almost surely, 2^36721163 is an apocalyptic number.

36721163 is a deficient number, since it is larger than the sum of its proper divisors (1266277).

36721163 is a wasteful number, since it uses less digits than its factorization.

36721163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266276.

The product of its digits is 4536, while the sum is 29.

The square root of 36721163 is about 6059.7989240568. The cubic root of 36721163 is about 332.3830044219.

Subtracting from 36721163 its reverse (36112763), we obtain a square (608400 = 780²).

The spelling of 36721163 in words is "thirty-six million, seven hundred twenty-one thousand, one hundred sixty-three".