661480246 has 8 divisors (see below), whose sum is σ = 1133966160. Its totient is φ = 283491528.

The previous prime is 661480189. The next prime is 661480271. The reversal of 661480246 is 642084166.

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

It is a super-2 number, since 2×661480246² = 875112231696441032, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 23624281 + ... + 23624308.

It is an arithmetic number, because the mean of its divisors is an integer number (141745770).

Almost surely, 2^661480246 is an apocalyptic number.

661480246 is a deficient number, since it is larger than the sum of its proper divisors (472485914).

661480246 is a wasteful number, since it uses less digits than its factorization.

661480246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47248598.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 661480246 is about 25719.2582707978. The cubic root of 661480246 is about 871.3091867242.

The spelling of 661480246 in words is "six hundred sixty-one million, four hundred eighty thousand, two hundred forty-six".