6667901 has 4 divisors (see below), whose sum is σ = 6676572. Its totient is φ = 6659232.

The previous prime is 6667897. The next prime is 6667909. The reversal of 6667901 is 1097666.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1097666 = 2 ⋅548833.

It can be written as a sum of positive squares in 2 ways, for example, as 139876 + 6528025 = 374^2 + 2555^2 .

It is a cyclic number.

It is not a de Polignac number, because 6667901 - 2² = 6667897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6667909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3056 + ... + 4761.

It is an arithmetic number, because the mean of its divisors is an integer number (1669143).

Almost surely, 2^6667901 is an apocalyptic number.

It is an amenable number.

6667901 is a deficient number, since it is larger than the sum of its proper divisors (8671).

6667901 is an equidigital number, since it uses as much as digits as its factorization.

6667901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8670.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 6667901 is about 2582.2279140308. The cubic root of 6667901 is about 188.2188205808.

The spelling of 6667901 in words is "six million, six hundred sixty-seven thousand, nine hundred one".