662864091 has 8 divisors (see below), whose sum is σ = 884158464. Its totient is φ = 441739560.

The previous prime is 662864089. The next prime is 662864093. The reversal of 662864091 is 190468266.

It is an interprime number because it is at equal distance from previous prime (662864089) and next prime (662864093).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 662864091 - 2¹ = 662864089 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (662864093) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 33055 + ... + 49176.

It is an arithmetic number, because the mean of its divisors is an integer number (110519808).

Almost surely, 2^662864091 is an apocalyptic number.

662864091 is a deficient number, since it is larger than the sum of its proper divisors (221294373).

662864091 is a wasteful number, since it uses less digits than its factorization.

662864091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84921.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 662864091 is about 25746.1471098104. The cubic root of 662864091 is about 871.9163688802.

The spelling of 662864091 in words is "six hundred sixty-two million, eight hundred sixty-four thousand, ninety-one".