6616997 has 8 divisors (see below), whose sum is σ = 7097760. Its totient is φ = 6149520.

The previous prime is 6616993. The next prime is 6617003. The reversal of 6616997 is 7996166.

It is a happy number.

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 6616997 - 2² = 6616993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2279 + ... + 4292.

It is an arithmetic number, because the mean of its divisors is an integer number (887220).

Almost surely, 2^6616997 is an apocalyptic number.

It is an amenable number.

6616997 is a deficient number, since it is larger than the sum of its proper divisors (480763).

6616997 is a wasteful number, since it uses less digits than its factorization.

6616997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6643.

The product of its digits is 122472, while the sum is 44.

The square root of 6616997 is about 2572.3524253103. The cubic root of 6616997 is about 187.7386306851.

It can be divided in two parts, 66169 and 97, that added together give a palindrome (66266).

The spelling of 6616997 in words is "six million, six hundred sixteen thousand, nine hundred ninety-seven".