36646749 has 20 divisors (see below), whose sum is σ = 56635260. Its totient is φ = 23587200.

The previous prime is 36646723. The next prime is 36646759. The reversal of 36646749 is 94764663.

It can be written as a sum of positive squares in 2 ways, for example, as 28196100 + 8450649 = 5310^2 + 2907^2 .

It is not a de Polignac number, because 36646749 - 2¹³ = 36638557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36646759) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5452 + ... + 10149.

It is an arithmetic number, because the mean of its divisors is an integer number (2831763).

Almost surely, 2^36646749 is an apocalyptic number.

It is an amenable number.

36646749 is a deficient number, since it is larger than the sum of its proper divisors (19988511).

36646749 is a wasteful number, since it uses less digits than its factorization.

36646749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15642 (or 15633 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 36646749 is about 6053.6558375910. The cubic root of 36646749 is about 332.1583322060.

The spelling of 36646749 in words is "thirty-six million, six hundred forty-six thousand, seven hundred forty-nine".