87825707 has 16 divisors (see below), whose sum is σ = 93560832. Its totient is φ = 82272960.

The previous prime is 87825701. The next prime is 87825709. The reversal of 87825707 is 70752878.

It is a cyclic number.

It is not a de Polignac number, because 87825707 - 2⁴ = 87825691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87825701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312407 + ... + 312687.

It is an arithmetic number, because the mean of its divisors is an integer number (5847552).

Almost surely, 2^87825707 is an apocalyptic number.

87825707 is a deficient number, since it is larger than the sum of its proper divisors (5735125).

87825707 is a wasteful number, since it uses less digits than its factorization.

87825707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538.

The product of its (nonzero) digits is 219520, while the sum is 44.

The square root of 87825707 is about 9371.5370670984. The cubic root of 87825707 is about 444.5021693611.

The spelling of 87825707 in words is "eighty-seven million, eight hundred twenty-five thousand, seven hundred seven".