9687678 has 64 divisors (see below), whose sum is σ = 26030592. Its totient is φ = 2321280.

The previous prime is 9687661. The next prime is 9687697. The reversal of 9687678 is 8767869.

It is a happy number.

It is a super-2 number, since 2×9687678² = 187702210063368, 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 9687678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5200 + ... + 6812.

It is an arithmetic number, because the mean of its divisors is an integer number (406728).

Almost surely, 2^9687678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9687678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13015296).

9687678 is an abundant number, since it is smaller than the sum of its proper divisors (16342914).

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

9687678 is a wasteful number, since it uses less digits than its factorization.

9687678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649.

The product of its digits is 1016064, while the sum is 51.

The square root of 9687678 is about 3112.5034939739. The cubic root of 9687678 is about 213.1767802165.

It can be divided in two parts, 96876 and 78, that multiplied together give a triangular number (7556328 = T₃₈₈₇).

The spelling of 9687678 in words is "nine million, six hundred eighty-seven thousand, six hundred seventy-eight".