66007887 has 16 divisors (see below), whose sum is σ = 96750720. Its totient is φ = 39696800.

The previous prime is 66007873. The next prime is 66007891. The reversal of 66007887 is 78870066.

It is not a de Polignac number, because 66007887 - 2⁴ = 66007871 is a prime.

It is a super-2 number, since 2×66007887² = 8714082292409538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66007807) 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, 3312 + ... + 11957.

It is an arithmetic number, because the mean of its divisors is an integer number (6046920).

Almost surely, 2^66007887 is an apocalyptic number.

66007887 is a deficient number, since it is larger than the sum of its proper divisors (30742833).

66007887 is a wasteful number, since it uses less digits than its factorization.

66007887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15414.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 66007887 is about 8124.5238014298. The cubic root of 66007887 is about 404.1400990271.

The spelling of 66007887 in words is "sixty-six million, seven thousand, eight hundred eighty-seven".