6454398643 has 32 divisors (see below), whose sum is σ = 8110679040. Its totient is φ = 4989816960.

The previous prime is 6454398623. The next prime is 6454398661. The reversal of 6454398643 is 3468934546.

It is a cyclic number.

It is not a de Polignac number, because 6454398643 - 2⁵ = 6454398611 is a prime.

It is a super-3 number, since 3×6454398643³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6454398623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6565530 + ... + 6566512.

It is an arithmetic number, because the mean of its divisors is an integer number (253458720).

Almost surely, 2^6454398643 is an apocalyptic number.

6454398643 is a deficient number, since it is larger than the sum of its proper divisors (1656280397).

6454398643 is a wasteful number, since it uses less digits than its factorization.

6454398643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587.

The product of its digits is 7464960, while the sum is 52.

The square root of 6454398643 is about 80339.2721089754. The cubic root of 6454398643 is about 1861.8810356359.

The spelling of 6454398643 in words is "six billion, four hundred fifty-four million, three hundred ninety-eight thousand, six hundred forty-three".