87081743 has 4 divisors (see below), whose sum is σ = 99522000. Its totient is φ = 74641488.

The previous prime is 87081733. The next prime is 87081767. The reversal of 87081743 is 34718078.

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 87081743 - 2⁴ = 87081727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87081697 and 87081706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87081733) 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, 6220118 + ... + 6220131.

It is an arithmetic number, because the mean of its divisors is an integer number (24880500).

Almost surely, 2^87081743 is an apocalyptic number.

87081743 is a deficient number, since it is larger than the sum of its proper divisors (12440257).

87081743 is a wasteful number, since it uses less digits than its factorization.

87081743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12440256.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 87081743 is about 9331.7599090418. The cubic root of 87081743 is about 443.2434954049.

The spelling of 87081743 in words is "eighty-seven million, eighty-one thousand, seven hundred forty-three".