660247467 has 16 divisors (see below), whose sum is σ = 967697280. Its totient is φ = 397092800.

The previous prime is 660247457. The next prime is 660247501. The reversal of 660247467 is 764742066.

It is a cyclic number.

It is not a de Polignac number, because 660247467 - 2⁴ = 660247451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660247457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72042 + ... + 80687.

It is an arithmetic number, because the mean of its divisors is an integer number (60481080).

Almost surely, 2^660247467 is an apocalyptic number.

660247467 is a deficient number, since it is larger than the sum of its proper divisors (307449813).

660247467 is a wasteful number, since it uses less digits than its factorization.

660247467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152874.

The product of its (nonzero) digits is 338688, while the sum is 42.

The square root of 660247467 is about 25695.2810259005. The cubic root of 660247467 is about 870.7675733549.

The spelling of 660247467 in words is "six hundred sixty million, two hundred forty-seven thousand, four hundred sixty-seven".