36691973 has 4 divisors (see below), whose sum is σ = 36704448. Its totient is φ = 36679500.

The previous prime is 36691961. The next prime is 36691979. The reversal of 36691973 is 37919663.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 36691973 - 2⁶ = 36691909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36691979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 890 + ... + 8612.

It is an arithmetic number, because the mean of its divisors is an integer number (9176112).

Almost surely, 2^36691973 is an apocalyptic number.

It is an amenable number.

36691973 is a deficient number, since it is larger than the sum of its proper divisors (12475).

36691973 is an equidigital number, since it uses as much as digits as its factorization.

36691973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12474.

The product of its digits is 183708, while the sum is 44.

The square root of 36691973 is about 6057.3899494749. The cubic root of 36691973 is about 332.2949096100.

The spelling of 36691973 in words is "thirty-six million, six hundred ninety-one thousand, nine hundred seventy-three".