87620207 has 4 divisors (see below), whose sum is σ = 87902256. Its totient is φ = 87338160.

The previous prime is 87620171. The next prime is 87620219. The reversal of 87620207 is 70202678.

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 87620207 - 2⁸ = 87619951 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 (87620707) 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, 140558 + ... + 141179.

It is an arithmetic number, because the mean of its divisors is an integer number (21975564).

Almost surely, 2^87620207 is an apocalyptic number.

87620207 is a deficient number, since it is larger than the sum of its proper divisors (282049).

87620207 is a wasteful number, since it uses less digits than its factorization.

87620207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282048.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 87620207 is about 9360.5665960988. The cubic root of 87620207 is about 444.1552074190.

The spelling of 87620207 in words is "eighty-seven million, six hundred twenty thousand, two hundred seven".