66777282 has 48 divisors (see below), whose sum is σ = 169985088. Its totient is φ = 18678240.

The previous prime is 66777259. The next prime is 66777289. The reversal of 66777282 is 28277766.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66777289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10398 + ... + 15545.

It is an arithmetic number, because the mean of its divisors is an integer number (3541356).

Almost surely, 2^66777282 is an apocalyptic number.

66777282 is an abundant number, since it is smaller than the sum of its proper divisors (103207806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66777282 is a wasteful number, since it uses less digits than its factorization.

66777282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25975 (or 25972 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 66777282 is about 8171.7367799018. The cubic root of 66777282 is about 405.7042707190.

The spelling of 66777282 in words is "sixty-six million, seven hundred seventy-seven thousand, two hundred eighty-two".