87749673 has 8 divisors (see below), whose sum is σ = 127635936. Its totient is φ = 53181600.

The previous prime is 87749671. The next prime is 87749677. The reversal of 87749673 is 37694778.

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

It is not a de Polignac number, because 87749673 - 2¹ = 87749671 is a prime.

It is a super-2 number, since 2×87749673² = 15400010223213858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87749671) 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, 1329508 + ... + 1329573.

It is an arithmetic number, because the mean of its divisors is an integer number (15954492).

Almost surely, 2^87749673 is an apocalyptic number.

It is an amenable number.

87749673 is a deficient number, since it is larger than the sum of its proper divisors (39886263).

87749673 is a wasteful number, since it uses less digits than its factorization.

87749673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659095.

The product of its digits is 1778112, while the sum is 51.

The square root of 87749673 is about 9367.4795436126. The cubic root of 87749673 is about 444.3738582740.

The spelling of 87749673 in words is "eighty-seven million, seven hundred forty-nine thousand, six hundred seventy-three".