6406724 has 12 divisors (see below), whose sum is σ = 11802000. Its totient is φ = 3034728.

The previous prime is 6406721. The next prime is 6406727. The reversal of 6406724 is 4276046.

It is an interprime number because it is at equal distance from previous prime (6406721) and next prime (6406727).

It is a super-2 number, since 2×6406724² = 82092224824352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6406721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42074 + ... + 42225.

It is an arithmetic number, because the mean of its divisors is an integer number (983500).

Almost surely, 2^6406724 is an apocalyptic number.

It is an amenable number.

6406724 is a deficient number, since it is larger than the sum of its proper divisors (5395276).

6406724 is a wasteful number, since it uses less digits than its factorization.

6406724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84322 (or 84320 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 6406724 is about 2531.1507264483. The cubic root of 6406724 is about 185.7285515105.

The spelling of 6406724 in words is "six million, four hundred six thousand, seven hundred twenty-four".