87908773 has 4 divisors (see below), whose sum is σ = 90940140. Its totient is φ = 84877408.

The previous prime is 87908759. The next prime is 87908789. The reversal of 87908773 is 37780978.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75220929 + 12687844 = 8673^2 + 3562^2 .

It is a cyclic number.

It is not a de Polignac number, because 87908773 - 2¹³ = 87900581 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 (87908273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515640 + ... + 1515697.

It is an arithmetic number, because the mean of its divisors is an integer number (22735035).

Almost surely, 2^87908773 is an apocalyptic number.

It is an amenable number.

87908773 is a deficient number, since it is larger than the sum of its proper divisors (3031367).

87908773 is a wasteful number, since it uses less digits than its factorization.

87908773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031366.

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 87908773 is about 9375.9678433749. The cubic root of 87908773 is about 444.6422626736.

The spelling of 87908773 in words is "eighty-seven million, nine hundred eight thousand, seven hundred seventy-three".