6403898577 has 4 divisors (see below), whose sum is σ = 8538531440. Its totient is φ = 4269265716.

The previous prime is 6403898551. The next prime is 6403898587. The reversal of 6403898577 is 7758983046.

6403898577 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6403898577 - 2¹¹ = 6403896529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6403898587) 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, 1067316427 + ... + 1067316432.

It is an arithmetic number, because the mean of its divisors is an integer number (2134632860).

Almost surely, 2^6403898577 is an apocalyptic number.

It is an amenable number.

6403898577 is a deficient number, since it is larger than the sum of its proper divisors (2134632863).

6403898577 is a wasteful number, since it uses less digits than its factorization.

6403898577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134632862.

The product of its (nonzero) digits is 10160640, while the sum is 57.

The square root of 6403898577 is about 80024.3623967102. The cubic root of 6403898577 is about 1857.0124484115.

The spelling of 6403898577 in words is "six billion, four hundred three million, eight hundred ninety-eight thousand, five hundred seventy-seven".