87272641 has 4 divisors (see below), whose sum is σ = 89401284. Its totient is φ = 85144000.

The previous prime is 87272617. The next prime is 87272663. The reversal of 87272641 is 14627278.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24403600 + 62869041 = 4940^2 + 7929^2 .

It is a cyclic number.

It is not a de Polignac number, because 87272641 - 2¹¹ = 87270593 is a prime.

It is a super-2 number, since 2×87272641² = 15233027734229762, 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 87272641.

It is not an unprimeable number, because it can be changed into a prime (87272041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064260 + ... + 1064341.

It is an arithmetic number, because the mean of its divisors is an integer number (22350321).

Almost surely, 2^87272641 is an apocalyptic number.

It is an amenable number.

87272641 is a deficient number, since it is larger than the sum of its proper divisors (2128643).

87272641 is a wasteful number, since it uses less digits than its factorization.

87272641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128642.

The product of its digits is 37632, while the sum is 37.

The square root of 87272641 is about 9341.9827124653. The cubic root of 87272641 is about 443.5671474105.

The spelling of 87272641 in words is "eighty-seven million, two hundred seventy-two thousand, six hundred forty-one".