7043661 has 24 divisors (see below), whose sum is σ = 11344320. Its totient is φ = 4185216.

The previous prime is 7043657. The next prime is 7043669. The reversal of 7043661 is 1663407.

It is not a de Polignac number, because 7043661 - 2² = 7043657 is a prime.

It is a super-2 number, since 2×7043661² = 99226320565842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7043669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1696 + ... + 4118.

It is an arithmetic number, because the mean of its divisors is an integer number (472680).

Almost surely, 2^7043661 is an apocalyptic number.

It is an amenable number.

7043661 is a deficient number, since it is larger than the sum of its proper divisors (4300659).

7043661 is a wasteful number, since it uses less digits than its factorization.

7043661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465 (or 2462 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 7043661 is about 2653.9896382616. The cubic root of 7043661 is about 191.6900108513.

The spelling of 7043661 in words is "seven million, forty-three thousand, six hundred sixty-one".