6500990390 has 16 divisors (see below), whose sum is σ = 11717630640. Its totient is φ = 2596874400.

The previous prime is 6500990359. The next prime is 6500990423. The reversal of 6500990390 is 930990056.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432461 + ... + 447240.

It is an arithmetic number, because the mean of its divisors is an integer number (732351915).

Almost surely, 2^6500990390 is an apocalyptic number.

6500990390 is a deficient number, since it is larger than the sum of its proper divisors (5216640250).

6500990390 is a wasteful number, since it uses less digits than its factorization.

6500990390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880447.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 6500990390 is about 80628.7193870770. The cubic root of 6500990390 is about 1866.3503592802.

The spelling of 6500990390 in words is "six billion, five hundred million, nine hundred ninety thousand, three hundred ninety".