646098698 has 8 divisors (see below), whose sum is σ = 1107597792. Its totient is φ = 276899436.

The previous prime is 646098653. The next prime is 646098701. The reversal of 646098698 is 896890646.

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

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 3 ways as a sum of consecutive naturals, for example, 23074940 + ... + 23074967.

It is an arithmetic number, because the mean of its divisors is an integer number (138449724).

Almost surely, 2^646098698 is an apocalyptic number.

646098698 is a deficient number, since it is larger than the sum of its proper divisors (461499094).

646098698 is a wasteful number, since it uses less digits than its factorization.

646098698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46149916.

The product of its (nonzero) digits is 4478976, while the sum is 56.

The square root of 646098698 is about 25418.4715905579. The cubic root of 646098698 is about 864.5025698708.

The spelling of 646098698 in words is "six hundred forty-six million, ninety-eight thousand, six hundred ninety-eight".