667073344 has 28 divisors (see below), whose sum is σ = 1512828064. Its totient is φ = 285888384.

The previous prime is 667073249. The next prime is 667073357. The reversal of 667073344 is 443370766.

It is a tau number, because it is divible by the number of its divisors (28).

It is a junction number, because it is equal to n+sod(n) for n = 667073297 and 667073306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744054 + ... + 744949.

Almost surely, 2^667073344 is an apocalyptic number.

667073344 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

667073344 is an abundant number, since it is smaller than the sum of its proper divisors (845754720).

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

667073344 is a wasteful number, since it uses less digits than its factorization.

667073344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489022 (or 1489012 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 40.

The square root of 667073344 is about 25827.7630467681. The cubic root of 667073344 is about 873.7580613159.

The spelling of 667073344 in words is "six hundred sixty-seven million, seventy-three thousand, three hundred forty-four".