87668123 has 4 divisors (see below), whose sum is σ = 87725088. Its totient is φ = 87611160.

The previous prime is 87668107. The next prime is 87668129. The reversal of 87668123 is 32186678.

It is a happy number.

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 87668123 - 2⁴ = 87668107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87668129) 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, 26108 + ... + 29273.

It is an arithmetic number, because the mean of its divisors is an integer number (21931272).

Almost surely, 2^87668123 is an apocalyptic number.

87668123 is a deficient number, since it is larger than the sum of its proper divisors (56965).

87668123 is a wasteful number, since it uses less digits than its factorization.

87668123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56964.

The product of its digits is 96768, while the sum is 41.

The square root of 87668123 is about 9363.1257067285. The cubic root of 87668123 is about 444.2361562601.

The spelling of 87668123 in words is "eighty-seven million, six hundred sixty-eight thousand, one hundred twenty-three".