660288467 has 4 divisors (see below), whose sum is σ = 661715040. Its totient is φ = 658861896.

The previous prime is 660288451. The next prime is 660288487. The reversal of 660288467 is 764882066.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 660288467 - 2⁴ = 660288451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660288487) 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, 712592 + ... + 713517.

It is an arithmetic number, because the mean of its divisors is an integer number (165428760).

Almost surely, 2^660288467 is an apocalyptic number.

660288467 is a deficient number, since it is larger than the sum of its proper divisors (1426573).

660288467 is a wasteful number, since it uses less digits than its factorization.

660288467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426572.

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 660288467 is about 25696.0788253772. The cubic root of 660288467 is about 870.7855972694.

The spelling of 660288467 in words is "six hundred sixty million, two hundred eighty-eight thousand, four hundred sixty-seven".