36661761 has 8 divisors (see below), whose sum is σ = 54313760. Its totient is φ = 24441156.

The previous prime is 36661753. The next prime is 36661763. The reversal of 36661761 is 16716663.

It is not a de Polignac number, because 36661761 - 2³ = 36661753 is a prime.

It is a super-2 number, since 2×36661761² = 2688169439242242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36661763) 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 7 ways as a sum of consecutive naturals, for example, 678895 + ... + 678948.

It is an arithmetic number, because the mean of its divisors is an integer number (6789220).

Almost surely, 2^36661761 is an apocalyptic number.

It is an amenable number.

36661761 is a deficient number, since it is larger than the sum of its proper divisors (17651999).

36661761 is a wasteful number, since it uses less digits than its factorization.

36661761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357852 (or 1357846 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 36661761 is about 6054.8956225521. The cubic root of 36661761 is about 332.2036812051.

The spelling of 36661761 in words is "thirty-six million, six hundred sixty-one thousand, seven hundred sixty-one".