661342322 has 16 divisors (see below), whose sum is σ = 1059220800. Its totient is φ = 308937552.

The previous prime is 661342309. The next prime is 661342343. The reversal of 661342322 is 223243166.

661342322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165197 + ... + 169152.

It is an arithmetic number, because the mean of its divisors is an integer number (66201300).

Almost surely, 2^661342322 is an apocalyptic number.

661342322 is a deficient number, since it is larger than the sum of its proper divisors (397878478).

661342322 is a wasteful number, since it uses less digits than its factorization.

661342322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334417.

The product of its digits is 10368, while the sum is 29.

The square root of 661342322 is about 25716.5767939670. The cubic root of 661342322 is about 871.2486241691.

Adding to 661342322 its reverse (223243166), we get a palindrome (884585488).

The spelling of 661342322 in words is "six hundred sixty-one million, three hundred forty-two thousand, three hundred twenty-two".