6672385 has 4 divisors (see below), whose sum is σ = 8006868. Its totient is φ = 5337904.

The previous prime is 6672359. The next prime is 6672389. The reversal of 6672385 is 5832766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5832766 = 2 ⋅2916383.

It can be written as a sum of positive squares in 2 ways, for example, as 3301489 + 3370896 = 1817^2 + 1836^2 .

It is a cyclic number.

It is not a de Polignac number, because 6672385 - 2⁷ = 6672257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6672389) 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, 667234 + ... + 667243.

It is an arithmetic number, because the mean of its divisors is an integer number (2001717).

It is a Proth number, since it is equal to 1629 ⋅ 2¹² + 1 and 1629 < 2¹².

Almost surely, 2^6672385 is an apocalyptic number.

It is an amenable number.

6672385 is a deficient number, since it is larger than the sum of its proper divisors (1334483).

6672385 is a wasteful number, since it uses less digits than its factorization.

6672385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334482.

The product of its digits is 60480, while the sum is 37.

The square root of 6672385 is about 2583.0960106043. The cubic root of 6672385 is about 188.2610019748.

The spelling of 6672385 in words is "six million, six hundred seventy-two thousand, three hundred eighty-five".