667044744 has 32 divisors (see below), whose sum is σ = 1708287840. Its totient is φ = 216924800.

The previous prime is 667044743. The next prime is 667044757. The reversal of 667044744 is 447440766.

It is a junction number, because it is equal to n+sod(n) for n = 667044696 and 667044705.

It is not an unprimeable number, because it can be changed into a prime (667044743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337962 + ... + 339929.

It is an arithmetic number, because the mean of its divisors is an integer number (53383995).

Almost surely, 2^667044744 is an apocalyptic number.

It is an amenable number.

667044744 is an abundant number, since it is smaller than the sum of its proper divisors (1041243096).

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

667044744 is a wasteful number, since it uses less digits than its factorization.

667044744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677941 (or 677937 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 42.

The square root of 667044744 is about 25827.2093730624. The cubic root of 667044744 is about 873.7455740145.

The spelling of 667044744 in words is "six hundred sixty-seven million, forty-four thousand, seven hundred forty-four".