6601385 has 16 divisors (see below), whose sum is σ = 9248256. Its totient is φ = 4429248.

The previous prime is 6601381. The next prime is 6601393. The reversal of 6601385 is 5831066.

It is a cyclic number.

It is not a de Polignac number, because 6601385 - 2² = 6601381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6601381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362 + ... + 3651.

It is an arithmetic number, because the mean of its divisors is an integer number (578016).

Almost surely, 2^6601385 is an apocalyptic number.

It is an amenable number.

6601385 is a deficient number, since it is larger than the sum of its proper divisors (2646871).

6601385 is a wasteful number, since it uses less digits than its factorization.

6601385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4072.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 6601385 is about 2569.3160568525. The cubic root of 6601385 is about 187.5908655876.

It can be divided in two parts, 6601 and 385, that multiplied together give a triangular number (2541385 = T₂₂₅₄).

The spelling of 6601385 in words is "six million, six hundred one thousand, three hundred eighty-five".