66427587 has 8 divisors (see below), whose sum is σ = 98411280. Its totient is φ = 44285040.

The previous prime is 66427579. The next prime is 66427589. The reversal of 66427587 is 78572466.

66427587 is a `hidden beast` number, since 6 + 64 + 2 + 7 + 587 = 666.

It is not a de Polignac number, because 66427587 - 2³ = 66427579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66427589) 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, 1230114 + ... + 1230167.

It is an arithmetic number, because the mean of its divisors is an integer number (12301410).

Almost surely, 2^66427587 is an apocalyptic number.

66427587 is a deficient number, since it is larger than the sum of its proper divisors (31983693).

66427587 is a wasteful number, since it uses less digits than its factorization.

66427587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460290 (or 2460284 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 66427587 is about 8150.3120799145. The cubic root of 66427587 is about 404.9948421840.

The spelling of 66427587 in words is "sixty-six million, four hundred twenty-seven thousand, five hundred eighty-seven".