66723236 has 24 divisors (see below), whose sum is σ = 120022560. Its totient is φ = 32436800.

The previous prime is 66723233. The next prime is 66723257. The reversal of 66723236 is 63232766.

It is a junction number, because it is equal to n+sod(n) for n = 66723196 and 66723205.

It is not an unprimeable number, because it can be changed into a prime (66723233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68231 + ... + 69201.

It is an arithmetic number, because the mean of its divisors is an integer number (5000940).

Almost surely, 2^66723236 is an apocalyptic number.

It is an amenable number.

66723236 is a deficient number, since it is larger than the sum of its proper divisors (53299324).

66723236 is a wasteful number, since it uses less digits than its factorization.

66723236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435 (or 1433 counting only the distinct ones).

The product of its digits is 54432, while the sum is 35.

The square root of 66723236 is about 8168.4292247653. The cubic root of 66723236 is about 405.5947893182.

The spelling of 66723236 in words is "sixty-six million, seven hundred twenty-three thousand, two hundred thirty-six".