6454840 has 32 divisors (see below), whose sum is σ = 16598880. Its totient is φ = 2212992.

The previous prime is 6454807. The next prime is 6454841. The reversal of 6454840 is 484546.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6454841) 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, 11247 + ... + 11806.

It is an arithmetic number, because the mean of its divisors is an integer number (518715).

Almost surely, 2^6454840 is an apocalyptic number.

It is an amenable number.

6454840 is an abundant number, since it is smaller than the sum of its proper divisors (10144040).

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

6454840 is a wasteful number, since it uses less digits than its factorization.

6454840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23071 (or 23067 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 6454840 is about 2540.6377152203. The cubic root of 6454840 is about 186.1923473646.

The spelling of 6454840 in words is "six million, four hundred fifty-four thousand, eight hundred forty".