7423643 has 4 divisors (see below), whose sum is σ = 7624320. Its totient is φ = 7222968.

The previous prime is 7423631. The next prime is 7423673. The reversal of 7423643 is 3463247.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3463247 = 131 ⋅26437.

It is a cyclic number.

It is not a de Polignac number, because 7423643 - 2⁸ = 7423387 is a prime.

It is a super-2 number, since 2×7423643² = 110220950782898, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 7⁵ + 4⁶ + 2²¹ + 3¹¹ + 6⁷ + 4⁸ + 3¹⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7423673) 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, 100283 + ... + 100356.

It is an arithmetic number, because the mean of its divisors is an integer number (1906080).

Almost surely, 2^7423643 is an apocalyptic number.

7423643 is a deficient number, since it is larger than the sum of its proper divisors (200677).

7423643 is a wasteful number, since it uses less digits than its factorization.

7423643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200676.

The product of its digits is 12096, while the sum is 29.

The square root of 7423643 is about 2724.6363060049. The cubic root of 7423643 is about 195.0768314377.

The spelling of 7423643 in words is "seven million, four hundred twenty-three thousand, six hundred forty-three".