66602427 has 4 divisors (see below), whose sum is σ = 88803240. Its totient is φ = 44401616.

The previous prime is 66602401. The next prime is 66602441. The reversal of 66602427 is 72420666.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66602427 - 2¹¹ = 66600379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66604427) 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, 11100402 + ... + 11100407.

It is an arithmetic number, because the mean of its divisors is an integer number (22200810).

Almost surely, 2^66602427 is an apocalyptic number.

66602427 is a deficient number, since it is larger than the sum of its proper divisors (22200813).

66602427 is a wasteful number, since it uses less digits than its factorization.

66602427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22200812.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 66602427 is about 8161.0310010439. The cubic root of 66602427 is about 405.3498516402.

The spelling of 66602427 in words is "sixty-six million, six hundred two thousand, four hundred twenty-seven".