661115446 has 4 divisors (see below), whose sum is σ = 991673172. Its totient is φ = 330557722.

The previous prime is 661115417. The next prime is 661115459. The reversal of 661115446 is 644511166.

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

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, 165278860 + ... + 165278863.

It is an arithmetic number, because the mean of its divisors is an integer number (247918293).

Almost surely, 2^661115446 is an apocalyptic number.

661115446 is a deficient number, since it is larger than the sum of its proper divisors (330557726).

661115446 is a wasteful number, since it uses less digits than its factorization.

661115446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330557725.

The product of its digits is 17280, while the sum is 34.

The square root of 661115446 is about 25712.1653308312. The cubic root of 661115446 is about 871.1489843890.

The spelling of 661115446 in words is "six hundred sixty-one million, one hundred fifteen thousand, four hundred forty-six".