66267996 has 48 divisors (see below), whose sum is σ = 157326624. Its totient is φ = 21707776.

The previous prime is 66267959. The next prime is 66267997. The reversal of 66267996 is 69976266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66267997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284296 + ... + 284528.

It is an arithmetic number, because the mean of its divisors is an integer number (3277638).

Almost surely, 2^66267996 is an apocalyptic number.

It is an amenable number.

66267996 is an abundant number, since it is smaller than the sum of its proper divisors (91058628).

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

66267996 is a wasteful number, since it uses less digits than its factorization.

66267996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 548 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 51.

The square root of 66267996 is about 8140.5157084794. The cubic root of 66267996 is about 404.6702513312.

The spelling of 66267996 in words is "sixty-six million, two hundred sixty-seven thousand, nine hundred ninety-six".