87665043 has 8 divisors (see below), whose sum is σ = 118488208. Its totient is φ = 57642624.

The previous prime is 87665041. The next prime is 87665087. The reversal of 87665043 is 34056678.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87665043 - 2¹ = 87665041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87664992 and 87665010.

It is not an unprimeable number, because it can be changed into a prime (87665041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199930 + ... + 200367.

It is an arithmetic number, because the mean of its divisors is an integer number (14811026).

Almost surely, 2^87665043 is an apocalyptic number.

87665043 is a deficient number, since it is larger than the sum of its proper divisors (30823165).

87665043 is a wasteful number, since it uses less digits than its factorization.

87665043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400373.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 87665043 is about 9362.9612302946. The cubic root of 87665043 is about 444.2309538242.

The spelling of 87665043 in words is "eighty-seven million, six hundred sixty-five thousand, forty-three".