6490493686 has 8 divisors (see below), whose sum is σ = 9742654440. Its totient is φ = 3242942208.

The previous prime is 6490493663. The next prime is 6490493687. The reversal of 6490493686 is 6863940946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6490493687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148796 + ... + 1154431.

It is an arithmetic number, because the mean of its divisors is an integer number (1217831805).

Almost surely, 2^6490493686 is an apocalyptic number.

6490493686 is a deficient number, since it is larger than the sum of its proper divisors (3252160754).

6490493686 is a wasteful number, since it uses less digits than its factorization.

6490493686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304638.

The product of its (nonzero) digits is 6718464, while the sum is 55.

The square root of 6490493686 is about 80563.6002547056. The cubic root of 6490493686 is about 1865.3453287950.

The spelling of 6490493686 in words is "six billion, four hundred ninety million, four hundred ninety-three thousand, six hundred eighty-six".