6491899702 has 8 divisors (see below), whose sum is σ = 9754727976. Its totient is φ = 3240323712.

The previous prime is 6491899693. The next prime is 6491899721. The reversal of 6491899702 is 2079981946.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2811628 + ... + 2813935.

It is an arithmetic number, because the mean of its divisors is an integer number (1219340997).

Almost surely, 2^6491899702 is an apocalyptic number.

6491899702 is a deficient number, since it is larger than the sum of its proper divisors (3262828274).

6491899702 is a wasteful number, since it uses less digits than its factorization.

6491899702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5626142.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The square root of 6491899702 is about 80572.3259066039. The cubic root of 6491899702 is about 1865.4800137740.

The spelling of 6491899702 in words is "six billion, four hundred ninety-one million, eight hundred ninety-nine thousand, seven hundred two".