6601947 has 16 divisors (see below), whose sum is σ = 9864192. Its totient is φ = 3892320.

The previous prime is 6601927. The next prime is 6601961. The reversal of 6601947 is 7491066.

It is a happy number.

It is not a de Polignac number, because 6601947 - 2⁶ = 6601883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

6601947 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6601927) 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, 1483 + ... + 3924.

It is an arithmetic number, because the mean of its divisors is an integer number (616512).

Almost surely, 2^6601947 is an apocalyptic number.

6601947 is a deficient number, since it is larger than the sum of its proper divisors (3262245).

6601947 is a wasteful number, since it uses less digits than its factorization.

6601947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5458.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 6601947 is about 2569.4254221518. The cubic root of 6601947 is about 187.5961888682.

It can be divided in two parts, 66019 and 47, that added together give a palindrome (66066).

The spelling of 6601947 in words is "six million, six hundred one thousand, nine hundred forty-seven".