66587007 has 8 divisors (see below), whose sum is σ = 88867584. Its totient is φ = 44348888.

The previous prime is 66586991. The next prime is 66587009. The reversal of 66587007 is 70078566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66587007 - 2⁴ = 66586991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66587009) 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, 6753 + ... + 13370.

It is an arithmetic number, because the mean of its divisors is an integer number (11108448).

Almost surely, 2^66587007 is an apocalyptic number.

66587007 is a deficient number, since it is larger than the sum of its proper divisors (22280577).

66587007 is a wasteful number, since it uses less digits than its factorization.

66587007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21229.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 66587007 is about 8160.0862127799. The cubic root of 66587007 is about 405.3185666083.

The spelling of 66587007 in words is "sixty-six million, five hundred eighty-seven thousand, seven".