665497376 has 24 divisors (see below), whose sum is σ = 1316420784. Its totient is φ = 331168320.

The previous prime is 665497337. The next prime is 665497379. The reversal of 665497376 is 673794566.

665497376 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (665497379) 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, 42530 + ... + 56033.

It is an arithmetic number, because the mean of its divisors is an integer number (54850866).

Almost surely, 2^665497376 is an apocalyptic number.

It is an amenable number.

665497376 is a deficient number, since it is larger than the sum of its proper divisors (650923408).

665497376 is a wasteful number, since it uses less digits than its factorization.

665497376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98784 (or 98776 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 53.

The square root of 665497376 is about 25797.2358209169. The cubic root of 665497376 is about 873.0694311043.

The spelling of 665497376 in words is "six hundred sixty-five million, four hundred ninety-seven thousand, three hundred seventy-six".