87646842 has 24 divisors (see below), whose sum is σ = 193486644. Its totient is φ = 28664064.

The previous prime is 87646841. The next prime is 87646843. The reversal of 87646842 is 24864678.

It is an interprime number because it is at equal distance from previous prime (87646841) and next prime (87646843).

It can be written as a sum of positive squares in 2 ways, for example, as 68906601 + 18740241 = 8301^2 + 4329^2 .

It is not an unprimeable number, because it can be changed into a prime (87646841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44983 + ... + 46890.

Almost surely, 2^87646842 is an apocalyptic number.

87646842 is an abundant number, since it is smaller than the sum of its proper divisors (105839802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87646842 is a wasteful number, since it uses less digits than its factorization.

87646842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91934 (or 91931 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 87646842 is about 9361.9892117007. The cubic root of 87646842 is about 444.2002079801.

It can be divided in two parts, 87646 and 842, that added together give a palindrome (88488).

The spelling of 87646842 in words is "eighty-seven million, six hundred forty-six thousand, eight hundred forty-two".