87751722 has 16 divisors (see below), whose sum is σ = 185827392. Its totient is φ = 27529920.

The previous prime is 87751717. The next prime is 87751723. The reversal of 87751722 is 22715778.

It is not an unprimeable number, because it can be changed into a prime (87751723) 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, 430054 + ... + 430257.

It is an arithmetic number, because the mean of its divisors is an integer number (11614212).

Almost surely, 2^87751722 is an apocalyptic number.

87751722 is an abundant number, since it is smaller than the sum of its proper divisors (98075670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87751722 is a wasteful number, since it uses less digits than its factorization.

87751722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860333.

The product of its digits is 54880, while the sum is 39.

The square root of 87751722 is about 9367.5889107070. The cubic root of 87751722 is about 444.3773170331.

The spelling of 87751722 in words is "eighty-seven million, seven hundred fifty-one thousand, seven hundred twenty-two".