84687660 has 96 divisors (see below), whose sum is σ = 272025600. Its totient is φ = 21850560.

The previous prime is 84687653. The next prime is 84687667. The reversal of 84687660 is 6678648.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (84687653) and next prime (84687667).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84687667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14211 + ... + 19269.

It is an arithmetic number, because the mean of its divisors is an integer number (2833600).

Almost surely, 2^84687660 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 84687660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136012800).

84687660 is an abundant number, since it is smaller than the sum of its proper divisors (187337940).

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

84687660 is a wasteful number, since it uses less digits than its factorization.

84687660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5108 (or 5100 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 84687660 is about 9202.5898528621. The cubic root of 84687660 is about 439.1437549283.

The spelling of 84687660 in words is "eighty-four million, six hundred eighty-seven thousand, six hundred sixty".