87458661 has 12 divisors (see below), whose sum is σ = 127239840. Its totient is φ = 57885480.

The previous prime is 87458633. The next prime is 87458711. The reversal of 87458661 is 16685478.

It is a happy number.

87458661 is a `hidden beast` number, since 8 + 7 + 4 + 586 + 61 = 666.

It is not a de Polignac number, because 87458661 - 2⁵ = 87458629 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87458611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33705 + ... + 36206.

It is an arithmetic number, because the mean of its divisors is an integer number (10603320).

Almost surely, 2^87458661 is an apocalyptic number.

It is an amenable number.

87458661 is a deficient number, since it is larger than the sum of its proper divisors (39781179).

87458661 is a wasteful number, since it uses less digits than its factorization.

87458661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70056 (or 70053 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 87458661 is about 9351.9335433909. The cubic root of 87458661 is about 443.8820754514.

The spelling of 87458661 in words is "eighty-seven million, four hundred fifty-eight thousand, six hundred sixty-one".