66982545 has 40 divisors (see below), whose sum is σ = 137231424. Its totient is φ = 30619296.

The previous prime is 66982541. The next prime is 66982549. The reversal of 66982545 is 54528966.

It is an interprime number because it is at equal distance from previous prime (66982541) and next prime (66982549).

It is not a de Polignac number, because 66982545 - 2² = 66982541 is a prime.

It is a super-2 number, since 2×66982545² = 8973322669354050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 66982545.

It is not an unprimeable number, because it can be changed into a prime (66982541) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8979 + ... + 14648.

Almost surely, 2^66982545 is an apocalyptic number.

It is an amenable number.

66982545 is an abundant number, since it is smaller than the sum of its proper divisors (70248879).

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

66982545 is a wasteful number, since it uses less digits than its factorization.

66982545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23651 (or 23642 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 66982545 is about 8184.2864685933. The cubic root of 66982545 is about 406.1195361742.

The spelling of 66982545 in words is "sixty-six million, nine hundred eighty-two thousand, five hundred forty-five".