6427443245 has 4 divisors (see below), whose sum is σ = 7712931900. Its totient is φ = 5141954592.

The previous prime is 6427443233. The next prime is 6427443251. The reversal of 6427443245 is 5423447246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4075290244 + 2352153001 = 63838^2 + 48499^2 .

It is a cyclic number.

It is not a de Polignac number, because 6427443245 - 2¹⁰ = 6427442221 is a prime.

It is a super-2 number, since 2×6427443245² = 82624053335392260050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642744320 + ... + 642744329.

It is an arithmetic number, because the mean of its divisors is an integer number (1928232975).

Almost surely, 2^6427443245 is an apocalyptic number.

It is an amenable number.

6427443245 is a deficient number, since it is larger than the sum of its proper divisors (1285488655).

6427443245 is a wasteful number, since it uses less digits than its factorization.

6427443245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285488654.

The product of its digits is 645120, while the sum is 41.

The square root of 6427443245 is about 80171.3368043717. The cubic root of 6427443245 is about 1859.2855047554.

The spelling of 6427443245 in words is "six billion, four hundred twenty-seven million, four hundred forty-three thousand, two hundred forty-five".