87940064 has 48 divisors (see below), whose sum is σ = 180396720. Its totient is φ = 42147840.

The previous prime is 87940049. The next prime is 87940067. The reversal of 87940064 is 46004978.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87940067) 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, 178859 + ... + 179349.

It is an arithmetic number, because the mean of its divisors is an integer number (3758265).

Almost surely, 2^87940064 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 87940064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90198360).

87940064 is an abundant number, since it is smaller than the sum of its proper divisors (92456656).

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

87940064 is a wasteful number, since it uses less digits than its factorization.

87940064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 715 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 87940064 is about 9377.6363759745. The cubic root of 87940064 is about 444.6950130044.

The spelling of 87940064 in words is "eighty-seven million, nine hundred forty thousand, sixty-four".