66830532 has 12 divisors (see below), whose sum is σ = 155937936. Its totient is φ = 22276840.

The previous prime is 66830527. The next prime is 66830549. The reversal of 66830532 is 23503866.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 66830493 and 66830502.

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, 2784594 + ... + 2784617.

It is an arithmetic number, because the mean of its divisors is an integer number (12994828).

Almost surely, 2^66830532 is an apocalyptic number.

It is an amenable number.

66830532 is an abundant number, since it is smaller than the sum of its proper divisors (89107404).

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

66830532 is a wasteful number, since it uses less digits than its factorization.

66830532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5569218 (or 5569216 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 66830532 is about 8174.9943119246. The cubic root of 66830532 is about 405.8120818979.

The spelling of 66830532 in words is "sixty-six million, eight hundred thirty thousand, five hundred thirty-two".