661327334 has 4 divisors (see below), whose sum is σ = 991991004. Its totient is φ = 330663666.

The previous prime is 661327327. The next prime is 661327343. The reversal of 661327334 is 433723166.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 661327294 and 661327303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165331832 + ... + 165331835.

It is an arithmetic number, because the mean of its divisors is an integer number (247997751).

Almost surely, 2^661327334 is an apocalyptic number.

661327334 is a deficient number, since it is larger than the sum of its proper divisors (330663670).

661327334 is a wasteful number, since it uses less digits than its factorization.

661327334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330663669.

The product of its digits is 54432, while the sum is 35.

The square root of 661327334 is about 25716.2853849462. The cubic root of 661327334 is about 871.2420424173.

The spelling of 661327334 in words is "six hundred sixty-one million, three hundred twenty-seven thousand, three hundred thirty-four".