661494298 has 8 divisors (see below), whose sum is σ = 992505780. Its totient is φ = 330659040.

The previous prime is 661494257. The next prime is 661494331. The reversal of 661494298 is 892494166.

It can be written as a sum of positive squares in 2 ways, for example, as 644296689 + 17197609 = 25383^2 + 4147^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34233 + ... + 49948.

Almost surely, 2^661494298 is an apocalyptic number.

661494298 is a deficient number, since it is larger than the sum of its proper divisors (331011482).

661494298 is a wasteful number, since it uses less digits than its factorization.

661494298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88112.

The product of its digits is 746496, while the sum is 49.

The square root of 661494298 is about 25719.5314498534. The cubic root of 661494298 is about 871.3153564978.

The spelling of 661494298 in words is "six hundred sixty-one million, four hundred ninety-four thousand, two hundred ninety-eight".