87069660 has 24 divisors (see below), whose sum is σ = 243795216. Its totient is φ = 23218560.

The previous prime is 87069659. The next prime is 87069667. The reversal of 87069660 is 6696078.

It is a happy number.

It is a super-2 number, since 2×87069660² = 15162251385031200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87069667) 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 7 ways as a sum of consecutive naturals, for example, 725521 + ... + 725640.

It is an arithmetic number, because the mean of its divisors is an integer number (10158134).

Almost surely, 2^87069660 is an apocalyptic number.

It is an amenable number.

87069660 is an abundant number, since it is smaller than the sum of its proper divisors (156725556).

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

87069660 is a wasteful number, since it uses less digits than its factorization.

87069660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451173 (or 1451171 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 87069660 is about 9331.1124738693. The cubic root of 87069660 is about 443.2229937524. Note that the first 3 decimals are identical.

The spelling of 87069660 in words is "eighty-seven million, sixty-nine thousand, six hundred sixty".