6686901 has 16 divisors (see below), whose sum is σ = 10669120. Its totient is φ = 4114800.

The previous prime is 6686893. The next prime is 6686909. The reversal of 6686901 is 1096866.

It is an interprime number because it is at equal distance from previous prime (6686893) and next prime (6686909).

It is not a de Polignac number, because 6686901 - 2³ = 6686893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6686909) 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, 9175 + ... + 9876.

It is an arithmetic number, because the mean of its divisors is an integer number (666820).

Almost surely, 2^6686901 is an apocalyptic number.

It is an amenable number.

6686901 is a deficient number, since it is larger than the sum of its proper divisors (3982219).

6686901 is a wasteful number, since it uses less digits than its factorization.

6686901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19073 (or 19067 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 6686901 is about 2585.9042905723. The cubic root of 6686901 is about 188.3974258239.

It can be divided in two parts, 668 and 6901, that added together give a square (7569 = 87²).

The spelling of 6686901 in words is "six million, six hundred eighty-six thousand, nine hundred one".