66148887 has 16 divisors (see below), whose sum is σ = 106728192. Its totient is φ = 35575680.

The previous prime is 66148883. The next prime is 66148919. The reversal of 66148887 is 78884166.

It is not a de Polignac number, because 66148887 - 2² = 66148883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66148883) 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, 92289 + ... + 93002.

It is an arithmetic number, because the mean of its divisors is an integer number (6670512).

Almost surely, 2^66148887 is an apocalyptic number.

66148887 is a deficient number, since it is larger than the sum of its proper divisors (40579305).

66148887 is a wasteful number, since it uses less digits than its factorization.

66148887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185318.

The product of its digits is 516096, while the sum is 48.

The square root of 66148887 is about 8133.1966040420. The cubic root of 66148887 is about 404.4276567223.

The spelling of 66148887 in words is "sixty-six million, one hundred forty-eight thousand, eight hundred eighty-seven".