43648693 has 12 divisors (see below), whose sum is σ = 48266764. Its totient is φ = 39441600.

The previous prime is 43648609. The next prime is 43648697. The reversal of 43648693 is 39684634.

It can be written as a sum of positive squares in 2 ways, for example, as 12545764 + 31102929 = 3542^2 + 5577^2 .

It is not a de Polignac number, because 43648693 - 2²¹ = 41551541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43648697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20905 + ... + 22897.

Almost surely, 2^43648693 is an apocalyptic number.

It is an amenable number.

43648693 is a deficient number, since it is larger than the sum of its proper divisors (4618071).

43648693 is a wasteful number, since it uses less digits than its factorization.

43648693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196 (or 2185 counting only the distinct ones).

The product of its digits is 373248, while the sum is 43.

The square root of 43648693 is about 6606.7157499018. The cubic root of 43648693 is about 352.0927489968.

The spelling of 43648693 in words is "forty-three million, six hundred forty-eight thousand, six hundred ninety-three".