867491616 has 96 divisors (see below), whose sum is σ = 2364284160. Its totient is φ = 278175744.

The previous prime is 867491609. The next prime is 867491663. The reversal of 867491616 is 616194768.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1288656 + ... + 1289328.

It is an arithmetic number, because the mean of its divisors is an integer number (24627960).

Almost surely, 2^867491616 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 867491616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1182142080).

867491616 is an abundant number, since it is smaller than the sum of its proper divisors (1496792544).

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

867491616 is a wasteful number, since it uses less digits than its factorization.

867491616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178 (or 1170 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 867491616 is about 29453.2106229525. The cubic root of 867491616 is about 953.7219148252.

The spelling of 867491616 in words is "eight hundred sixty-seven million, four hundred ninety-one thousand, six hundred sixteen".