666324136 has 8 divisors (see below), whose sum is σ = 1249357770. Its totient is φ = 333162064.

The previous prime is 666324119. The next prime is 666324187. The reversal of 666324136 is 631423666.

It can be written as a sum of positive squares in only one way, i.e., 663062500 + 3261636 = 25750^2 + 1806^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×666324136² = 887975708432292992, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 666324095 and 666324104.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41645251 + ... + 41645266.

Almost surely, 2^666324136 is an apocalyptic number.

It is an amenable number.

666324136 is a deficient number, since it is larger than the sum of its proper divisors (583033634).

666324136 is a wasteful number, since it uses less digits than its factorization.

666324136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83290523 (or 83290519 counting only the distinct ones).

The product of its digits is 93312, while the sum is 37.

The square root of 666324136 is about 25813.2550446471. The cubic root of 666324136 is about 873.4308250558.

The spelling of 666324136 in words is "six hundred sixty-six million, three hundred twenty-four thousand, one hundred thirty-six".