87220045 has 8 divisors (see below), whose sum is σ = 114179040. Its totient is φ = 63432720.

The previous prime is 87220037. The next prime is 87220097. The reversal of 87220045 is 54002278.

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

It is not a de Polignac number, because 87220045 - 2³ = 87220037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87219995 and 87220022.

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, 792855 + ... + 792964.

It is an arithmetic number, because the mean of its divisors is an integer number (14272380).

Almost surely, 2^87220045 is an apocalyptic number.

It is an amenable number.

87220045 is a deficient number, since it is larger than the sum of its proper divisors (26958995).

87220045 is a wasteful number, since it uses less digits than its factorization.

87220045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585835.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 87220045 is about 9339.1672540971. The cubic root of 87220045 is about 443.4780223206.

The spelling of 87220045 in words is "eighty-seven million, two hundred twenty thousand, forty-five".