87042658 has 8 divisors (see below), whose sum is σ = 130777452. Its totient is φ = 43450176.

The previous prime is 87042653. The next prime is 87042661. The reversal of 87042658 is 85624078.

It can be written as a sum of positive squares in 2 ways, for example, as 86992929 + 49729 = 9327^2 + 223^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 87042658.

It is not an unprimeable number, because it can be changed into a prime (87042653) 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, 34035 + ... + 36502.

Almost surely, 2^87042658 is an apocalyptic number.

87042658 is a deficient number, since it is larger than the sum of its proper divisors (43734794).

87042658 is a wasteful number, since it uses less digits than its factorization.

87042658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71156.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 87042658 is about 9329.6654816773. The cubic root of 87042658 is about 443.1771716500.

The spelling of 87042658 in words is "eighty-seven million, forty-two thousand, six hundred fifty-eight".