6672145 has 8 divisors (see below), whose sum is σ = 8089704. Its totient is φ = 5282304.

The previous prime is 6672137. The next prime is 6672157. The reversal of 6672145 is 5412766.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 256 + 6671889 = 16^2 + 2583^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6672145 - 2³ = 6672137 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6394 + ... + 7363.

It is an arithmetic number, because the mean of its divisors is an integer number (1011213).

Almost surely, 2^6672145 is an apocalyptic number.

It is an amenable number.

6672145 is a deficient number, since it is larger than the sum of its proper divisors (1417559).

6672145 is a wasteful number, since it uses less digits than its factorization.

6672145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13859.

The product of its digits is 10080, while the sum is 31.

The square root of 6672145 is about 2583.0495543059. The cubic root of 6672145 is about 188.2587447518.

Adding to 6672145 its product of digits (10080), we get a square (6682225 = 2585²).

It can be divided in two parts, 66721 and 45, that added together give a palindrome (66766).

The spelling of 6672145 in words is "six million, six hundred seventy-two thousand, one hundred forty-five".