87260660 has 72 divisors (see below), whose sum is σ = 201352704. Its totient is φ = 31726080.

The previous prime is 87260659. The next prime is 87260671. The reversal of 87260660 is 6606278.

It is a super-2 number, since 2×87260660² = 15228845567271200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87260660.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178937 + ... + 179423.

Almost surely, 2^87260660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87260660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100676352).

87260660 is an abundant number, since it is smaller than the sum of its proper divisors (114092044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87260660 is a wasteful number, since it uses less digits than its factorization.

87260660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 87260660 is about 9341.3414454242. The cubic root of 87260660 is about 443.5468484900.

The spelling of 87260660 in words is "eighty-seven million, two hundred sixty thousand, six hundred sixty".