90525687 has 12 divisors (see below), whose sum is σ = 140407416. Its totient is φ = 51728880.

The previous prime is 90525683. The next prime is 90525689. The reversal of 90525687 is 78652509.

It is not a de Polignac number, because 90525687 - 2² = 90525683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90525683) 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, 307764 + ... + 308057.

It is an arithmetic number, because the mean of its divisors is an integer number (11700618).

Almost surely, 2^90525687 is an apocalyptic number.

90525687 is a deficient number, since it is larger than the sum of its proper divisors (49881729).

90525687 is a wasteful number, since it uses less digits than its factorization.

90525687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615838 (or 615831 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 90525687 is about 9514.4987781806. The cubic root of 90525687 is about 449.0113058762.

The spelling of 90525687 in words is "ninety million, five hundred twenty-five thousand, six hundred eighty-seven".