661673348 has 48 divisors (see below), whose sum is σ = 1355558400. Its totient is φ = 276756480.

The previous prime is 661673333. The next prime is 661673351. The reversal of 661673348 is 843376166.

It is a junction number, because it is equal to n+sod(n) for n = 661673299 and 661673308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195188 + ... + 198548.

It is an arithmetic number, because the mean of its divisors is an integer number (28240800).

Almost surely, 2^661673348 is an apocalyptic number.

It is an amenable number.

661673348 is an abundant number, since it is smaller than the sum of its proper divisors (693885052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

661673348 is a wasteful number, since it uses less digits than its factorization.

661673348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540 (or 3538 counting only the distinct ones).

The product of its digits is 435456, while the sum is 44.

The square root of 661673348 is about 25723.0120320308. The cubic root of 661673348 is about 871.3939638475.

The spelling of 661673348 in words is "six hundred sixty-one million, six hundred seventy-three thousand, three hundred forty-eight".