661734322 has 4 divisors (see below), whose sum is σ = 992601486. Its totient is φ = 330867160.

The previous prime is 661734319. The next prime is 661734323. The reversal of 661734322 is 223437166.

661734322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223437166 = 2 ⋅111718583.

It can be written as a sum of positive squares in only one way, i.e., 510714801 + 151019521 = 22599^2 + 12289^2 .

It is not an unprimeable number, because it can be changed into a prime (661734323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165433579 + ... + 165433582.

Almost surely, 2^661734322 is an apocalyptic number.

661734322 is a deficient number, since it is larger than the sum of its proper divisors (330867164).

661734322 is a wasteful number, since it uses less digits than its factorization.

661734322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330867163.

The product of its digits is 36288, while the sum is 34.

The square root of 661734322 is about 25724.1972080763. The cubic root of 661734322 is about 871.4207296949.

The spelling of 661734322 in words is "six hundred sixty-one million, seven hundred thirty-four thousand, three hundred twenty-two".