6456538 has 16 divisors (see below), whose sum is σ = 10614240. Its totient is φ = 2921200.

The previous prime is 6456529. The next prime is 6456539. The reversal of 6456538 is 8356546.

It is a super-3 number, since 3×6456538³ (a number of 21 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6456497 and 6456506.

It is not an unprimeable number, because it can be changed into a prime (6456539) 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, 5373 + ... + 6463.

It is an arithmetic number, because the mean of its divisors is an integer number (663390).

Almost surely, 2^6456538 is an apocalyptic number.

6456538 is a deficient number, since it is larger than the sum of its proper divisors (4157702).

6456538 is a wasteful number, since it uses less digits than its factorization.

6456538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373.

The product of its digits is 86400, while the sum is 37.

The square root of 6456538 is about 2540.9718613161. The cubic root of 6456538 is about 186.2086724213.

The spelling of 6456538 in words is "six million, four hundred fifty-six thousand, five hundred thirty-eight".