667340916 has 96 divisors (see below), whose sum is σ = 1820786688. Its totient is φ = 187983360.

The previous prime is 667340911. The next prime is 667340939. The reversal of 667340916 is 619043766.

667340916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667340911) 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, 184461 + ... + 188043.

It is an arithmetic number, because the mean of its divisors is an integer number (18966528).

Almost surely, 2^667340916 is an apocalyptic number.

667340916 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667340916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (910393344).

667340916 is an abundant number, since it is smaller than the sum of its proper divisors (1153445772).

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

667340916 is a wasteful number, since it uses less digits than its factorization.

667340916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3701 (or 3699 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 667340916 is about 25832.9424572579. The cubic root of 667340916 is about 873.8748710300.

The spelling of 667340916 in words is "six hundred sixty-seven million, three hundred forty thousand, nine hundred sixteen".