667407340 has 12 divisors (see below), whose sum is σ = 1401555456. Its totient is φ = 266962928.

The previous prime is 667407337. The next prime is 667407347. The reversal of 667407340 is 43704766.

It is a self number, because there is not a number n which added to its sum of digits gives 667407340.

It is not an unprimeable number, because it can be changed into a prime (667407347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16685164 + ... + 16685203.

It is an arithmetic number, because the mean of its divisors is an integer number (116796288).

Almost surely, 2^667407340 is an apocalyptic number.

It is an amenable number.

667407340 is an abundant number, since it is smaller than the sum of its proper divisors (734148116).

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

667407340 is a wasteful number, since it uses less digits than its factorization.

667407340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33370376 (or 33370374 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 667407340 is about 25834.2280705269. The cubic root of 667407340 is about 873.9038638767.

The spelling of 667407340 in words is "six hundred sixty-seven million, four hundred seven thousand, three hundred forty".