43687701 has 16 divisors (see below), whose sum is σ = 65116800. Its totient is φ = 28947744.

The previous prime is 43687691. The next prime is 43687723. The reversal of 43687701 is 10778634.

It is not a de Polignac number, because 43687701 - 2⁷ = 43687573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43687751) 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, 336 + ... + 9353.

It is an arithmetic number, because the mean of its divisors is an integer number (4069800).

Almost surely, 2^43687701 is an apocalyptic number.

It is an amenable number.

43687701 is a deficient number, since it is larger than the sum of its proper divisors (21429099).

43687701 is a wasteful number, since it uses less digits than its factorization.

43687701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9865 (or 9859 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 43687701 is about 6609.6672382201. The cubic root of 43687701 is about 352.1976039469.

Adding to 43687701 its product of nonzero digits (28224), we get a triangular number (43715925 = T₉₃₅₀).

The spelling of 43687701 in words is "forty-three million, six hundred eighty-seven thousand, seven hundred one".