87236437 has 8 divisors (see below), whose sum is σ = 90937440. Its totient is φ = 83581680.

The previous prime is 87236419. The next prime is 87236489. The reversal of 87236437 is 73463278.

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 87236437 - 2¹⁹ = 86712149 is a prime.

It is a super-2 number, since 2×87236437² = 15220391880909938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87236437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87236407) 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, 7683 + ... + 15280.

It is an arithmetic number, because the mean of its divisors is an integer number (11367180).

Almost surely, 2^87236437 is an apocalyptic number.

It is an amenable number.

87236437 is a deficient number, since it is larger than the sum of its proper divisors (3701003).

87236437 is a wasteful number, since it uses less digits than its factorization.

87236437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23123.

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

The square root of 87236437 is about 9340.0448071730. The cubic root of 87236437 is about 443.5058027709.

The spelling of 87236437 in words is "eighty-seven million, two hundred thirty-six thousand, four hundred thirty-seven".