87766025 has 6 divisors (see below), whose sum is σ = 108829902. Its totient is φ = 70212800.

The previous prime is 87765973. The next prime is 87766031. The reversal of 87766025 is 52066778.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 27175369 + 60590656 = 5213^2 + 7784^2 .

It is not a de Polignac number, because 87766025 - 2²² = 83571721 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1755296 + ... + 1755345.

It is an arithmetic number, because the mean of its divisors is an integer number (18138317).

Almost surely, 2^87766025 is an apocalyptic number.

It is an amenable number.

87766025 is a deficient number, since it is larger than the sum of its proper divisors (21063877).

87766025 is a wasteful number, since it uses less digits than its factorization.

87766025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510651 (or 3510646 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 87766025 is about 9368.3523097714. The cubic root of 87766025 is about 444.4014593266.

The spelling of 87766025 in words is "eighty-seven million, seven hundred sixty-six thousand, twenty-five".