6697731 has 8 divisors (see below), whose sum is σ = 8950464. Its totient is φ = 4455080.

The previous prime is 6697727. The next prime is 6697741. The reversal of 6697731 is 1377966.

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 6697731 - 2² = 6697727 is a prime.

It is a super-2 number, since 2×6697731² = 89719201096722, which contains 22 as substring.

6697731 is a lucky number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 6697731.

It is not an unprimeable number, because it can be changed into a prime (6697721) 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, 801 + ... + 3746.

It is an arithmetic number, because the mean of its divisors is an integer number (1118808).

Almost surely, 2^6697731 is an apocalyptic number.

6697731 is a deficient number, since it is larger than the sum of its proper divisors (2252733).

6697731 is a wasteful number, since it uses less digits than its factorization.

6697731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5041.

The product of its digits is 47628, while the sum is 39.

The square root of 6697731 is about 2587.9974884068. The cubic root of 6697731 is about 188.4990794703.

The spelling of 6697731 in words is "six million, six hundred ninety-seven thousand, seven hundred thirty-one".