665461076 has 12 divisors (see below), whose sum is σ = 1330922208. Its totient is φ = 285197592.

The previous prime is 665461067. The next prime is 665461087. The reversal of 665461076 is 670164566.

665461076 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11883206 + ... + 11883261.

It is an arithmetic number, because the mean of its divisors is an integer number (110910184).

Almost surely, 2^665461076 is an apocalyptic number.

It is an amenable number.

665461076 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

665461076 is a wasteful number, since it uses less digits than its factorization.

665461076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23766478 (or 23766476 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 665461076 is about 25796.5322475716. The cubic root of 665461076 is about 873.0535567634.

The spelling of 665461076 in words is "six hundred sixty-five million, four hundred sixty-one thousand, seventy-six".