7408643 has 4 divisors (see below), whose sum is σ = 8082168. Its totient is φ = 6735120.

The previous prime is 7408603. The next prime is 7408649. The reversal of 7408643 is 3468047.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7408643 - 2¹⁶ = 7343107 is a prime.

It is a super-2 number, since 2×7408643² = 109775982202898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7408649) 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, 336746 + ... + 336767.

It is an arithmetic number, because the mean of its divisors is an integer number (2020542).

Almost surely, 2^7408643 is an apocalyptic number.

7408643 is a deficient number, since it is larger than the sum of its proper divisors (673525).

7408643 is a wasteful number, since it uses less digits than its factorization.

7408643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673524.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 7408643 is about 2721.8822531476. The cubic root of 7408643 is about 194.9453539622.

The spelling of 7408643 in words is "seven million, four hundred eight thousand, six hundred forty-three".