87423566 has 16 divisors (see below), whose sum is σ = 132481104. Its totient is φ = 43265664.

The previous prime is 87423517. The next prime is 87423593. The reversal of 87423566 is 66532478.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135641 + ... + 136283.

It is an arithmetic number, because the mean of its divisors is an integer number (8280069).

Almost surely, 2^87423566 is an apocalyptic number.

87423566 is a deficient number, since it is larger than the sum of its proper divisors (45057538).

87423566 is a wasteful number, since it uses less digits than its factorization.

87423566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235.

The product of its digits is 241920, while the sum is 41.

The square root of 87423566 is about 9350.0570051738. The cubic root of 87423566 is about 443.8226945378.

The spelling of 87423566 in words is "eighty-seven million, four hundred twenty-three thousand, five hundred sixty-six".