6400606398 has 16 divisors (see below), whose sum is σ = 12822103056. Its totient is φ = 2130053760.

The previous prime is 6400606397. The next prime is 6400606417. The reversal of 6400606398 is 8936060046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400606397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 866443 + ... + 873798.

It is an arithmetic number, because the mean of its divisors is an integer number (801381441).

Almost surely, 2^6400606398 is an apocalyptic number.

6400606398 is an abundant number, since it is smaller than the sum of its proper divisors (6421496658).

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

6400606398 is a wasteful number, since it uses less digits than its factorization.

6400606398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740859.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 6400606398 is about 80003.7898977292. The cubic root of 6400606398 is about 1856.6941701387.

The spelling of 6400606398 in words is "six billion, four hundred million, six hundred six thousand, three hundred ninety-eight".