87457886 has 4 divisors (see below), whose sum is σ = 131186832. Its totient is φ = 43728942.

The previous prime is 87457861. The next prime is 87457889. The reversal of 87457886 is 68875478.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87457889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21864470 + ... + 21864473.

It is an arithmetic number, because the mean of its divisors is an integer number (32796708).

Almost surely, 2^87457886 is an apocalyptic number.

87457886 is a deficient number, since it is larger than the sum of its proper divisors (43728946).

87457886 is a wasteful number, since it uses less digits than its factorization.

87457886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43728945.

The product of its digits is 3010560, while the sum is 53.

The square root of 87457886 is about 9351.8921080175. The cubic root of 87457886 is about 443.8807643191.

The spelling of 87457886 in words is "eighty-seven million, four hundred fifty-seven thousand, eight hundred eighty-six".