6505021992 has 64 divisors (see below), whose sum is σ = 18936478080. Its totient is φ = 1823507712.

The previous prime is 6505021969. The next prime is 6505022003. The reversal of 6505021992 is 2991205056.

It is a super-2 number, since 2×6505021992² = 84630622232807296128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6505021992.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356383 + ... + 374190.

It is an arithmetic number, because the mean of its divisors is an integer number (295882470).

Almost surely, 2^6505021992 is an apocalyptic number.

It is an amenable number.

6505021992 is an abundant number, since it is smaller than the sum of its proper divisors (12431456088).

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

6505021992 is a wasteful number, since it uses less digits than its factorization.

6505021992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730642 (or 730638 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 6505021992 is about 80653.7165417689. The cubic root of 6505021992 is about 1866.7360865056.

The spelling of 6505021992 in words is "six billion, five hundred five million, twenty-one thousand, nine hundred ninety-two".