66197832 has 16 divisors (see below), whose sum is σ = 165494640. Its totient is φ = 22065936.

The previous prime is 66197819. The next prime is 66197867. The reversal of 66197832 is 23879166.

It is a happy 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, 1379098 + ... + 1379145.

It is an arithmetic number, because the mean of its divisors is an integer number (10343415).

Almost surely, 2^66197832 is an apocalyptic number.

It is an amenable number.

66197832 is an abundant number, since it is smaller than the sum of its proper divisors (99296808).

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

66197832 is a wasteful number, since it uses less digits than its factorization.

66197832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758252 (or 2758248 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 66197832 is about 8136.2050121663. The cubic root of 66197832 is about 404.5273804032.

The spelling of 66197832 in words is "sixty-six million, one hundred ninety-seven thousand, eight hundred thirty-two".