66730632 has 16 divisors (see below), whose sum is σ = 166826640. Its totient is φ = 22243536.

The previous prime is 66730621. The next prime is 66730633. The reversal of 66730632 is 23603766.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66730593 and 66730602.

It is not an unprimeable number, because it can be changed into a prime (66730633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1390198 + ... + 1390245.

It is an arithmetic number, because the mean of its divisors is an integer number (10426665).

Almost surely, 2^66730632 is an apocalyptic number.

It is an amenable number.

66730632 is an abundant number, since it is smaller than the sum of its proper divisors (100096008).

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

66730632 is a wasteful number, since it uses less digits than its factorization.

66730632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780452 (or 2780448 counting only the distinct ones).

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

The square root of 66730632 is about 8168.8819308397. The cubic root of 66730632 is about 405.6097749435.

The spelling of 66730632 in words is "sixty-six million, seven hundred thirty thousand, six hundred thirty-two".