667374437 has 4 divisors (see below), whose sum is σ = 670868736. Its totient is φ = 663880140.

The previous prime is 667374413. The next prime is 667374451. The reversal of 667374437 is 734473766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667374437 is a prime.

It is a super-2 number, since 2×667374437² = 890777278322133938, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 667374391 and 667374400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667374467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1746863 + ... + 1747244.

It is an arithmetic number, because the mean of its divisors is an integer number (167717184).

Almost surely, 2^667374437 is an apocalyptic number.

It is an amenable number.

667374437 is a deficient number, since it is larger than the sum of its proper divisors (3494299).

667374437 is a wasteful number, since it uses less digits than its factorization.

667374437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494298.

The product of its digits is 1778112, while the sum is 47.

The square root of 667374437 is about 25833.5912524759. The cubic root of 667374437 is about 873.8895025665.

The spelling of 667374437 in words is "six hundred sixty-seven million, three hundred seventy-four thousand, four hundred thirty-seven".