667604346 has 16 divisors (see below), whose sum is σ = 1338311808. Its totient is φ = 222017600.

The previous prime is 667604341. The next prime is 667604347. The reversal of 667604346 is 643406766.

It is a junction number, because it is equal to n+sod(n) for n = 667604298 and 667604307.

It is not an unprimeable number, because it can be changed into a prime (667604341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126495 + ... + 131666.

It is an arithmetic number, because the mean of its divisors is an integer number (83644488).

Almost surely, 2^667604346 is an apocalyptic number.

667604346 is an abundant number, since it is smaller than the sum of its proper divisors (670707462).

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

667604346 is a wasteful number, since it uses less digits than its factorization.

667604346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258597.

The product of its (nonzero) digits is 435456, while the sum is 42.

The square root of 667604346 is about 25838.0406764909. The cubic root of 667604346 is about 873.9898420378.

The spelling of 667604346 in words is "six hundred sixty-seven million, six hundred four thousand, three hundred forty-six".