87354643 has 4 divisors (see below), whose sum is σ = 87911200. Its totient is φ = 86798088.

The previous prime is 87354601. The next prime is 87354679. The reversal of 87354643 is 34645378.

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 87354643 - 2²⁵ = 53800211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87354596 and 87354605.

It is not an unprimeable number, because it can be changed into a prime (87357643) 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, 278043 + ... + 278356.

It is an arithmetic number, because the mean of its divisors is an integer number (21977800).

Almost surely, 2^87354643 is an apocalyptic number.

87354643 is a deficient number, since it is larger than the sum of its proper divisors (556557).

87354643 is a wasteful number, since it uses less digits than its factorization.

87354643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556556.

The product of its digits is 241920, while the sum is 40.

The square root of 87354643 is about 9346.3705790002. The cubic root of 87354643 is about 443.7060302132.

The spelling of 87354643 in words is "eighty-seven million, three hundred fifty-four thousand, six hundred forty-three".