6437647854 has 96 divisors (see below), whose sum is σ = 15814745856. Its totient is φ = 1946488320.

The previous prime is 6437647847. The next prime is 6437647883. The reversal of 6437647854 is 4587467346.

It is a super-2 number, since 2×6437647854² = 82886619784221610632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 6437647854.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3083599 + ... + 3085685.

It is an arithmetic number, because the mean of its divisors is an integer number (164736936).

Almost surely, 2^6437647854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6437647854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7907372928).

6437647854 is an abundant number, since it is smaller than the sum of its proper divisors (9377098002).

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

6437647854 is a wasteful number, since it uses less digits than its factorization.

6437647854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2692 (or 2680 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 54.

The square root of 6437647854 is about 80234.9540661674. The cubic root of 6437647854 is about 1860.2689569445.

The spelling of 6437647854 in words is "six billion, four hundred thirty-seven million, six hundred forty-seven thousand, eight hundred fifty-four".