66036172 has 24 divisors (see below), whose sum is σ = 122073840. Its totient is φ = 31170240.

The previous prime is 66036167. The next prime is 66036209. The reversal of 66036172 is 27163066.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22722 + ... + 25462.

It is an arithmetic number, because the mean of its divisors is an integer number (5086410).

Almost surely, 2^66036172 is an apocalyptic number.

It is an amenable number.

66036172 is a deficient number, since it is larger than the sum of its proper divisors (56037668).

66036172 is a wasteful number, since it uses less digits than its factorization.

66036172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081 (or 3079 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 66036172 is about 8126.2643323978. The cubic root of 66036172 is about 404.1978167274.

The spelling of 66036172 in words is "sixty-six million, thirty-six thousand, one hundred seventy-two".