66980038 has 8 divisors (see below), whose sum is σ = 101237400. Its totient is φ = 33234240.

The previous prime is 66980033. The next prime is 66980047. The reversal of 66980038 is 83008966.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66980033) 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, 127563 + ... + 128086.

It is an arithmetic number, because the mean of its divisors is an integer number (12654675).

Almost surely, 2^66980038 is an apocalyptic number.

66980038 is a deficient number, since it is larger than the sum of its proper divisors (34257362).

66980038 is a wasteful number, since it uses less digits than its factorization.

66980038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255782.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 66980038 is about 8184.1333078097. The cubic root of 66980038 is about 406.1144694095.

The spelling of 66980038 in words is "sixty-six million, nine hundred eighty thousand, thirty-eight".