87356843 has 4 divisors (see below), whose sum is σ = 99836400. Its totient is φ = 74877288.

The previous prime is 87356831. The next prime is 87356873. The reversal of 87356843 is 34865378.

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 87356843 - 2⁴ = 87356827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87356794 and 87356803.

It is not an unprimeable number, because it can be changed into a prime (87356873) 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, 6239768 + ... + 6239781.

It is an arithmetic number, because the mean of its divisors is an integer number (24959100).

Almost surely, 2^87356843 is an apocalyptic number.

87356843 is a deficient number, since it is larger than the sum of its proper divisors (12479557).

87356843 is a wasteful number, since it uses less digits than its factorization.

87356843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12479556.

The product of its digits is 483840, while the sum is 44.

The square root of 87356843 is about 9346.4882710032. The cubic root of 87356843 is about 443.7097550489.

Adding to 87356843 its reverse (34865378), we get a palindrome (122222221).

The spelling of 87356843 in words is "eighty-seven million, three hundred fifty-six thousand, eight hundred forty-three".