66990482 has 8 divisors (see below), whose sum is σ = 108215436. Its totient is φ = 30918672.

The previous prime is 66990481. The next prime is 66990491. The reversal of 66990482 is 28409966.

It can be written as a sum of positive squares in 2 ways, for example, as 66569281 + 421201 = 8159^2 + 649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66990481) 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, 1288253 + ... + 1288304.

Almost surely, 2^66990482 is an apocalyptic number.

66990482 is a deficient number, since it is larger than the sum of its proper divisors (41224954).

66990482 is a wasteful number, since it uses less digits than its factorization.

66990482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576572.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 66990482 is about 8184.7713468368. The cubic root of 66990482 is about 406.1355763901.

The spelling of 66990482 in words is "sixty-six million, nine hundred ninety thousand, four hundred eighty-two".