665141676 has 12 divisors (see below), whose sum is σ = 1551997272. Its totient is φ = 221713888.

The previous prime is 665141671. The next prime is 665141693. The reversal of 665141676 is 676141566.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (665141671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27714225 + ... + 27714248.

It is an arithmetic number, because the mean of its divisors is an integer number (129333106).

Almost surely, 2^665141676 is an apocalyptic number.

It is an amenable number.

665141676 is an abundant number, since it is smaller than the sum of its proper divisors (886855596).

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

665141676 is a wasteful number, since it uses less digits than its factorization.

665141676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55428480 (or 55428478 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 665141676 is about 25790.3407499785. The cubic root of 665141676 is about 872.9138551633.

The spelling of 665141676 in words is "six hundred sixty-five million, one hundred forty-one thousand, six hundred seventy-six".