90382687 has 4 divisors (see below), whose sum is σ = 91620880. Its totient is φ = 89144496.

The previous prime is 90382681. The next prime is 90382717. The reversal of 90382687 is 78628309.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90382687 - 2³ = 90382679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90382681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 618987 + ... + 619132.

It is an arithmetic number, because the mean of its divisors is an integer number (22905220).

Almost surely, 2^90382687 is an apocalyptic number.

90382687 is a deficient number, since it is larger than the sum of its proper divisors (1238193).

90382687 is a wasteful number, since it uses less digits than its factorization.

90382687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238192.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 90382687 is about 9506.9809613778. The cubic root of 90382687 is about 448.7747525549.

The spelling of 90382687 in words is "ninety million, three hundred eighty-two thousand, six hundred eighty-seven".