66982449 has 4 divisors (see below), whose sum is σ = 89309936. Its totient is φ = 44654964.

The previous prime is 66982427. The next prime is 66982483. The reversal of 66982449 is 94428966.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 66982449 - 2¹⁵ = 66949681 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66982398 and 66982407.

It is not an unprimeable number, because it can be changed into a prime (66982249) 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, 11163739 + ... + 11163744.

It is an arithmetic number, because the mean of its divisors is an integer number (22327484).

Almost surely, 2^66982449 is an apocalyptic number.

It is an amenable number.

66982449 is a deficient number, since it is larger than the sum of its proper divisors (22327487).

66982449 is a wasteful number, since it uses less digits than its factorization.

66982449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22327486.

The product of its digits is 746496, while the sum is 48.

The square root of 66982449 is about 8184.2806036939. The cubic root of 66982449 is about 406.1193421560.

The spelling of 66982449 in words is "sixty-six million, nine hundred eighty-two thousand, four hundred forty-nine".