660345322 has 32 divisors (see below), whose sum is σ = 1258435584. Its totient is φ = 252806400.

The previous prime is 660345319. The next prime is 660345383. The reversal of 660345322 is 223543066.

It is a happy number.

660345322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52879 + ... + 64162.

It is an arithmetic number, because the mean of its divisors is an integer number (39326112).

Almost surely, 2^660345322 is an apocalyptic number.

660345322 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

660345322 is a deficient number, since it is larger than the sum of its proper divisors (598090262).

660345322 is a wasteful number, since it uses less digits than its factorization.

660345322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117094.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 660345322 is about 25697.1850987613. The cubic root of 660345322 is about 870.8105899287.

Adding to 660345322 its reverse (223543066), we get a palindrome (883888388).

The spelling of 660345322 in words is "six hundred sixty million, three hundred forty-five thousand, three hundred twenty-two".