5646431 has 16 divisors (see below), whose sum is σ = 7133184. Its totient is φ = 4354944.

The previous prime is 5646419. The next prime is 5646449. The reversal of 5646431 is 1346465.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5646431 - 2¹⁰ = 5645407 is a prime.

It is a super-2 number, since 2×5646431² = 63764366075522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5646394 and 5646403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5646451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1706 + ... + 3768.

It is an arithmetic number, because the mean of its divisors is an integer number (445824).

Almost surely, 2^5646431 is an apocalyptic number.

5646431 is a deficient number, since it is larger than the sum of its proper divisors (1486753).

5646431 is a wasteful number, since it uses less digits than its factorization.

5646431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110.

The product of its digits is 8640, while the sum is 29.

The square root of 5646431 is about 2376.2220014132. Note that the first 3 decimals coincide. The cubic root of 5646431 is about 178.0702390812.

The spelling of 5646431 in words is "five million, six hundred forty-six thousand, four hundred thirty-one".