6497553690 has 96 divisors (see below), whose sum is σ = 17842144320. Its totient is φ = 1636008192.

The previous prime is 6497553677. The next prime is 6497553701. The reversal of 6497553690 is 963557946.

It is a super-2 number, since 2×6497553690² = 84436407908865232200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 518782 + ... + 531158.

It is an arithmetic number, because the mean of its divisors is an integer number (185855670).

Almost surely, 2^6497553690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6497553690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8921072160).

6497553690 is an abundant number, since it is smaller than the sum of its proper divisors (11344590630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6497553690 is a wasteful number, since it uses less digits than its factorization.

6497553690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12716 (or 12713 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 54.

The square root of 6497553690 is about 80607.4046846814. The cubic root of 6497553690 is about 1866.0214239191.

The spelling of 6497553690 in words is "six billion, four hundred ninety-seven million, five hundred fifty-three thousand, six hundred ninety".