667075344 has 40 divisors (see below), whose sum is σ = 1855839552. Its totient is φ = 205253760.

The previous prime is 667075337. The next prime is 667075349. The reversal of 667075344 is 443570766.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 667075296 and 667075305.

It is not an unprimeable number, because it can be changed into a prime (667075349) 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, 533892 + ... + 535139.

Almost surely, 2^667075344 is an apocalyptic number.

It is an amenable number.

667075344 is an abundant number, since it is smaller than the sum of its proper divisors (1188764208).

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

667075344 is a wasteful number, since it uses less digits than its factorization.

667075344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069055 (or 1069049 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 42.

The square root of 667075344 is about 25827.8017647650. The cubic root of 667075344 is about 873.7589345404.

The spelling of 667075344 in words is "six hundred sixty-seven million, seventy-five thousand, three hundred forty-four".