6491901 has 16 divisors (see below), whose sum is σ = 9813440. Its totient is φ = 3784320.

The previous prime is 6491897. The next prime is 6491923. The reversal of 6491901 is 1091946.

It is not a de Polignac number, because 6491901 - 2² = 6491897 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491951) 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, 3640 + ... + 5121.

It is an arithmetic number, because the mean of its divisors is an integer number (613340).

Almost surely, 2^6491901 is an apocalyptic number.

It is an amenable number.

6491901 is a deficient number, since it is larger than the sum of its proper divisors (3321539).

6491901 is a wasteful number, since it uses less digits than its factorization.

6491901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8796.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 6491901 is about 2547.9209171401. The cubic root of 6491901 is about 186.5480138103.

The spelling of 6491901 in words is "six million, four hundred ninety-one thousand, nine hundred one".