87694776 has 72 divisors (see below), whose sum is σ = 257217480. Its totient is φ = 26979264.

The previous prime is 87694771. The next prime is 87694781. The reversal of 87694776 is 67749678.

It is an interprime number because it is at equal distance from previous prime (87694771) and next prime (87694781).

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87694771) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8565 + ... + 15771.

It is an arithmetic number, because the mean of its divisors is an integer number (3572465).

Almost surely, 2^87694776 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 87694776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128608740).

87694776 is an abundant number, since it is smaller than the sum of its proper divisors (169522704).

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

87694776 is a wasteful number, since it uses less digits than its factorization.

87694776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7245 (or 7225 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 87694776 is about 9364.5488946345. The cubic root of 87694776 is about 444.2811708225.

The spelling of 87694776 in words is "eighty-seven million, six hundred ninety-four thousand, seven hundred seventy-six".