667340340 has 48 divisors (see below), whose sum is σ = 1870319808. Its totient is φ = 177789184.

The previous prime is 667340291. The next prime is 667340381. The reversal of 667340340 is 43043766.

It is a congruent number.

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, 66919 + ... + 76241.

It is an arithmetic number, because the mean of its divisors is an integer number (38964996).

Almost surely, 2^667340340 is an apocalyptic number.

667340340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667340340 is an abundant number, since it is smaller than the sum of its proper divisors (1202979468).

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

667340340 is a wasteful number, since it uses less digits than its factorization.

667340340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10528 (or 10526 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 33.

The square root of 667340340 is about 25832.9313086998. The cubic root of 667340340 is about 873.8746196082.

The spelling of 667340340 in words is "six hundred sixty-seven million, three hundred forty thousand, three hundred forty".