87790623 has 8 divisors (see below), whose sum is σ = 117342000. Its totient is φ = 58383168.

The previous prime is 87790597. The next prime is 87790657. The reversal of 87790623 is 32609778.

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

It is not a de Polignac number, because 87790623 - 2²⁴ = 71013407 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87790663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34548 + ... + 37001.

It is an arithmetic number, because the mean of its divisors is an integer number (14667750).

Almost surely, 2^87790623 is an apocalyptic number.

87790623 is a deficient number, since it is larger than the sum of its proper divisors (29551377).

87790623 is a wasteful number, since it uses less digits than its factorization.

87790623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71961.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 87790623 is about 9369.6650420386. The cubic root of 87790623 is about 444.4429726039.

The spelling of 87790623 in words is "eighty-seven million, seven hundred ninety thousand, six hundred twenty-three".