36689749 has 2 divisors, whose sum is σ = 36689750. Its totient is φ = 36689748.

The previous prime is 36689713. The next prime is 36689767. The reversal of 36689749 is 94798663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36687249 + 2500 = 6057^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 36689749 - 2²⁵ = 3135317 is a prime.

It is a super-2 number, since 2×36689749² = 2692275363366002, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 36689696 and 36689705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36689789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18344874 + 18344875.

It is an arithmetic number, because the mean of its divisors is an integer number (18344875).

Almost surely, 2^36689749 is an apocalyptic number.

It is an amenable number.

36689749 is a deficient number, since it is larger than the sum of its proper divisors (1).

36689749 is an equidigital number, since it uses as much as digits as its factorization.

36689749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 52.

The square root of 36689749 is about 6057.2063692762. The cubic root of 36689749 is about 332.2881957091.

The spelling of 36689749 in words is "thirty-six million, six hundred eighty-nine thousand, seven hundred forty-nine".