66677268 has 24 divisors (see below), whose sum is σ = 177806272. Its totient is φ = 19050624.

The previous prime is 66677267. The next prime is 66677291. The reversal of 66677268 is 86277666.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66677263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396805 + ... + 396972.

Almost surely, 2^66677268 is an apocalyptic number.

It is an amenable number.

66677268 is an abundant number, since it is smaller than the sum of its proper divisors (111129004).

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

66677268 is a wasteful number, since it uses less digits than its factorization.

66677268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793791 (or 793789 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 48.

The square root of 66677268 is about 8165.6149799020. The cubic root of 66677268 is about 405.5016250493.

The spelling of 66677268 in words is "sixty-six million, six hundred seventy-seven thousand, two hundred sixty-eight".