6697998 has 32 divisors (see below), whose sum is σ = 15102720. Its totient is φ = 2199960.

The previous prime is 6697979. The next prime is 6698009. The reversal of 6697998 is 8997966.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2961 + ... + 4707.

It is an arithmetic number, because the mean of its divisors is an integer number (471960).

Almost surely, 2^6697998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6697998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7551360).

6697998 is an abundant number, since it is smaller than the sum of its proper divisors (8404722).

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

6697998 is a wasteful number, since it uses less digits than its factorization.

6697998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829 (or 1823 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 6697998 is about 2588.0490721777. The cubic root of 6697998 is about 188.5015842282.

Subtracting 6697998 from its reverse (8997966), we obtain a cube (2299968 = 132³).

The spelling of 6697998 in words is "six million, six hundred ninety-seven thousand, nine hundred ninety-eight".