87220205 has 8 divisors (see below), whose sum is σ = 108040704. Its totient is φ = 67525200.

The previous prime is 87220153. The next prime is 87220247. The reversal of 87220205 is 50202278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87220205 - 2⁶ = 87220141 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281201 + ... + 281510.

It is an arithmetic number, because the mean of its divisors is an integer number (13505088).

Almost surely, 2^87220205 is an apocalyptic number.

It is an amenable number.

87220205 is a deficient number, since it is larger than the sum of its proper divisors (20820499).

87220205 is a wasteful number, since it uses less digits than its factorization.

87220205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562747.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 87220205 is about 9339.1758201674. The cubic root of 87220205 is about 443.4782934985.

The spelling of 87220205 in words is "eighty-seven million, two hundred twenty thousand, two hundred five".