66023736 has 16 divisors (see below), whose sum is σ = 165059400. Its totient is φ = 22007904.

The previous prime is 66023719. The next prime is 66023747. The reversal of 66023736 is 63732066.

It is a junction number, because it is equal to n+sod(n) for n = 66023697 and 66023706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1375471 + ... + 1375518.

Almost surely, 2^66023736 is an apocalyptic number.

It is an amenable number.

66023736 is an abundant number, since it is smaller than the sum of its proper divisors (99035664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66023736 is a wasteful number, since it uses less digits than its factorization.

66023736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750998 (or 2750994 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 33.

The square root of 66023736 is about 8125.4991231308. The cubic root of 66023736 is about 404.1724421513.

The spelling of 66023736 in words is "sixty-six million, twenty-three thousand, seven hundred thirty-six".