66195633 has 32 divisors (see below), whose sum is σ = 108675072. Its totient is φ = 35006400.

The previous prime is 66195617. The next prime is 66195641. The reversal of 66195633 is 33659166.

It is not a de Polignac number, because 66195633 - 2⁴ = 66195617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66195591 and 66195600.

It is not an unprimeable number, because it can be changed into a prime (66195653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12763 + ... + 17183.

It is an arithmetic number, because the mean of its divisors is an integer number (3396096).

Almost surely, 2^66195633 is an apocalyptic number.

It is an amenable number.

66195633 is a deficient number, since it is larger than the sum of its proper divisors (42479439).

66195633 is a wasteful number, since it uses less digits than its factorization.

66195633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485.

The product of its digits is 87480, while the sum is 39.

The square root of 66195633 is about 8136.0698743312. The cubic root of 66195633 is about 404.5229010744.

The spelling of 66195633 in words is "sixty-six million, one hundred ninety-five thousand, six hundred thirty-three".