87723771 has 8 divisors (see below), whose sum is σ = 122050560. Its totient is φ = 55939752.

The previous prime is 87723751. The next prime is 87723787. The reversal of 87723771 is 17732778.

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

It is not a de Polignac number, because 87723771 - 2⁵ = 87723739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87723731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635611 + ... + 635748.

It is an arithmetic number, because the mean of its divisors is an integer number (15256320).

Almost surely, 2^87723771 is an apocalyptic number.

87723771 is a deficient number, since it is larger than the sum of its proper divisors (34326789).

87723771 is a wasteful number, since it uses less digits than its factorization.

87723771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271385.

The product of its digits is 115248, while the sum is 42.

The square root of 87723771 is about 9366.0968925161. The cubic root of 87723771 is about 444.3301304590.

The spelling of 87723771 in words is "eighty-seven million, seven hundred twenty-three thousand, seven hundred seventy-one".