6501213690 has 32 divisors (see below), whose sum is σ = 15822677376. Its totient is φ = 1709238720.

The previous prime is 6501213683. The next prime is 6501213713. The reversal of 6501213690 is 963121056.

It is a happy number.

It is a super-2 number, since 2×6501213690² = 84531558886086832200, which contains 22 as substring.

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, 1523977 + ... + 1528236.

It is an arithmetic number, because the mean of its divisors is an integer number (494458668).

Almost surely, 2^6501213690 is an apocalyptic number.

6501213690 is an abundant number, since it is smaller than the sum of its proper divisors (9321463686).

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

6501213690 is a wasteful number, since it uses less digits than its factorization.

6501213690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052294.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 6501213690 is about 80630.1041175069. The cubic root of 6501213690 is about 1866.3717278840.

The spelling of 6501213690 in words is "six billion, five hundred one million, two hundred thirteen thousand, six hundred ninety".