6997660 has 24 divisors (see below), whose sum is σ = 14747040. Its totient is φ = 2789184.

The previous prime is 6997657. The next prime is 6997663. The reversal of 6997660 is 667996.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6997657) and next prime (6997663).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6997663) 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, 8382 + ... + 9178.

It is an arithmetic number, because the mean of its divisors is an integer number (614460).

Almost surely, 2^6997660 is an apocalyptic number.

It is an amenable number.

6997660 is an abundant number, since it is smaller than the sum of its proper divisors (7749380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6997660 is a wasteful number, since it uses less digits than its factorization.

6997660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245 (or 1243 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 6997660 is about 2645.3090556682. The cubic root of 6997660 is about 191.2718003827.

The spelling of 6997660 in words is "six million, nine hundred ninety-seven thousand, six hundred sixty".