661196522 has 8 divisors (see below), whose sum is σ = 1133479776. Its totient is φ = 283369932.

The previous prime is 661196513. The next prime is 661196527. The reversal of 661196522 is 225691166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (661196527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23614148 + ... + 23614175.

It is an arithmetic number, because the mean of its divisors is an integer number (141684972).

Almost surely, 2^661196522 is an apocalyptic number.

661196522 is a deficient number, since it is larger than the sum of its proper divisors (472283254).

661196522 is a wasteful number, since it uses less digits than its factorization.

661196522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47228332.

The product of its digits is 38880, while the sum is 38.

The square root of 661196522 is about 25713.7418902812. The cubic root of 661196522 is about 871.1845940991.

The spelling of 661196522 in words is "six hundred sixty-one million, one hundred ninety-six thousand, five hundred twenty-two".