662731289 has 16 divisors (see below), whose sum is σ = 733320000. Its totient is φ = 593929920.

The previous prime is 662731283. The next prime is 662731301. The reversal of 662731289 is 982137266.

It is a cyclic number.

It is not a de Polignac number, because 662731289 - 2⁸ = 662731033 is a prime.

It is a super-2 number, since 2×662731289² = 878425522839203042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662731283) 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 15 ways as a sum of consecutive naturals, for example, 226367 + ... + 229275.

It is an arithmetic number, because the mean of its divisors is an integer number (45832500).

Almost surely, 2^662731289 is an apocalyptic number.

It is an amenable number.

662731289 is a deficient number, since it is larger than the sum of its proper divisors (70588711).

662731289 is a wasteful number, since it uses less digits than its factorization.

662731289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208.

The product of its digits is 217728, while the sum is 44.

The square root of 662731289 is about 25743.5679151123. The cubic root of 662731289 is about 871.8581367464.

The spelling of 662731289 in words is "six hundred sixty-two million, seven hundred thirty-one thousand, two hundred eighty-nine".