87425766 has 24 divisors (see below), whose sum is σ = 195534144. Its totient is φ = 28201680.

The previous prime is 87425761. The next prime is 87425771. The reversal of 87425766 is 66752478.

87425766 is a `hidden beast` number, since 8 + 74 + 2 + 576 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (87425761) and next prime (87425771).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87425761) 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, 77781 + ... + 78896.

It is an arithmetic number, because the mean of its divisors is an integer number (8147256).

Almost surely, 2^87425766 is an apocalyptic number.

87425766 is an abundant number, since it is smaller than the sum of its proper divisors (108108378).

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

87425766 is a wasteful number, since it uses less digits than its factorization.

87425766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156716 (or 156713 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 87425766 is about 9350.1746507752. The cubic root of 87425766 is about 443.8264174155.

The spelling of 87425766 in words is "eighty-seven million, four hundred twenty-five thousand, seven hundred sixty-six".