66028377 has 16 divisors (see below), whose sum is σ = 92124288. Its totient is φ = 41986560.

The previous prime is 66028351. The next prime is 66028379. The reversal of 66028377 is 77382066.

It is not a de Polignac number, because 66028377 - 2¹¹ = 66026329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66028379) 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, 27913 + ... + 30185.

It is an arithmetic number, because the mean of its divisors is an integer number (5757768).

Almost surely, 2^66028377 is an apocalyptic number.

It is an amenable number.

66028377 is a deficient number, since it is larger than the sum of its proper divisors (26095911).

66028377 is a wasteful number, since it uses less digits than its factorization.

66028377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 66028377 is about 8125.7847005689. The cubic root of 66028377 is about 404.1819120807.

The spelling of 66028377 in words is "sixty-six million, twenty-eight thousand, three hundred seventy-seven".