87290107 has 4 divisors (see below), whose sum is σ = 89419176. Its totient is φ = 85161040.

The previous prime is 87290089. The next prime is 87290111. The reversal of 87290107 is 70109278.

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 87290107 - 2²³ = 78901499 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87290167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064473 + ... + 1064554.

It is an arithmetic number, because the mean of its divisors is an integer number (22354794).

Almost surely, 2^87290107 is an apocalyptic number.

87290107 is a deficient number, since it is larger than the sum of its proper divisors (2129069).

87290107 is a wasteful number, since it uses less digits than its factorization.

87290107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129068.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 87290107 is about 9342.9174779616. The cubic root of 87290107 is about 443.5967360152.

The spelling of 87290107 in words is "eighty-seven million, two hundred ninety thousand, one hundred seven".