66632730 has 32 divisors (see below), whose sum is σ = 161509248. Its totient is φ = 17592000.

The previous prime is 66632729. The next prime is 66632759. The reversal of 66632730 is 3723666.

It is a junction number, because it is equal to n+sod(n) for n = 66632691 and 66632700.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7966 + ... + 14025.

It is an arithmetic number, because the mean of its divisors is an integer number (5047164).

Almost surely, 2^66632730 is an apocalyptic number.

66632730 is an abundant number, since it is smaller than the sum of its proper divisors (94876518).

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

66632730 is a wasteful number, since it uses less digits than its factorization.

66632730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22102.

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

The square root of 66632730 is about 8162.8873568119. The cubic root of 66632730 is about 405.4113181396.

The spelling of 66632730 in words is "sixty-six million, six hundred thirty-two thousand, seven hundred thirty".