646389098 has 8 divisors (see below), whose sum is σ = 969753792. Its totient is φ = 323137836.

The previous prime is 646389097. The next prime is 646389109. The reversal of 646389098 is 890983646.

646389098 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (646389097) 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, 12290 + ... + 37997.

It is an arithmetic number, because the mean of its divisors is an integer number (121219224).

Almost surely, 2^646389098 is an apocalyptic number.

646389098 is a deficient number, since it is larger than the sum of its proper divisors (323364694).

646389098 is a wasteful number, since it uses less digits than its factorization.

646389098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56716.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The square root of 646389098 is about 25424.1833300502. The cubic root of 646389098 is about 864.6320722432.

The spelling of 646389098 in words is "six hundred forty-six million, three hundred eighty-nine thousand, ninety-eight".