36666669 has 32 divisors (see below), whose sum is σ = 56335104. Its totient is φ = 21035520.

The previous prime is 36666649. The next prime is 36666683. The reversal of 36666669 is 96666663.

It is not a de Polignac number, because 36666669 - 2⁷ = 36666541 is a prime.

It is a super-2 number, since 2×36666669² = 2688889231111122, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36666649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36279 + ... + 37275.

It is an arithmetic number, because the mean of its divisors is an integer number (1760472).

Almost surely, 2^36666669 is an apocalyptic number.

36666669 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

36666669 is a deficient number, since it is larger than the sum of its proper divisors (19668435).

36666669 is a wasteful number, since it uses less digits than its factorization.

36666669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077.

The product of its digits is 1259712, while the sum is 48.

The square root of 36666669 is about 6055.3009008636. The cubic root of 36666669 is about 332.2185048513.

The spelling of 36666669 in words is "thirty-six million, six hundred sixty-six thousand, six hundred sixty-nine".