87243673 has 8 divisors (see below), whose sum is σ = 95245056. Its totient is φ = 79254000.

The previous prime is 87243659. The next prime is 87243683. The reversal of 87243673 is 37634278.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 87243673 - 2²¹ = 85146521 is a prime.

It is a super-2 number, since 2×87243673² = 15222916957061858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87243683) 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, 21723 + ... + 25423.

It is an arithmetic number, because the mean of its divisors is an integer number (11905632).

Almost surely, 2^87243673 is an apocalyptic number.

It is an amenable number.

87243673 is a deficient number, since it is larger than the sum of its proper divisors (8001383).

87243673 is a wasteful number, since it uses less digits than its factorization.

87243673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5855.

The product of its digits is 169344, while the sum is 40.

The square root of 87243673 is about 9340.4321634494. The cubic root of 87243673 is about 443.5180649226.

The spelling of 87243673 in words is "eighty-seven million, two hundred forty-three thousand, six hundred seventy-three".