87266644 has 12 divisors (see below), whose sum is σ = 161700084. Its totient is φ = 41066624.

The previous prime is 87266611. The next prime is 87266659. The reversal of 87266644 is 44666278.

It can be written as a sum of positive squares in 2 ways, for example, as 51122500 + 36144144 = 7150^2 + 6012^2 .

It is a super-3 number, since 3×87266644³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87266644.

It is a congruent number.

It is an unprimeable number.

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, 641599 + ... + 641734.

It is an arithmetic number, because the mean of its divisors is an integer number (13475007).

Almost surely, 2^87266644 is an apocalyptic number.

It is an amenable number.

87266644 is a deficient number, since it is larger than the sum of its proper divisors (74433440).

87266644 is a wasteful number, since it uses less digits than its factorization.

87266644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283354 (or 1283352 counting only the distinct ones).

The product of its digits is 387072, while the sum is 43.

The square root of 87266644 is about 9341.6617365435. The cubic root of 87266644 is about 443.5569871698.

The spelling of 87266644 in words is "eighty-seven million, two hundred sixty-six thousand, six hundred forty-four".