6422787999684 has 243 divisors, whose sum is σ = 19142670499407. Its totient is φ = 1810479087648.

The previous prime is 6422787999547. The next prime is 6422787999697. The reversal of 6422787999684 is 4869997872246.

The square root of 6422787999684 is 2534322.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 8834646129 + ... + 8834646855.

Almost surely, 2^{6422787999684} is an apocalyptic number.

6422787999684 is the 2534322-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6422787999684

6422787999684 is an abundant number, since it is smaller than the sum of its proper divisors (12719882499723).

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

6422787999684 is an equidigital number, since it uses as much as digits as its factorization.

6422787999684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644 (or 822 counting only the distinct ones).

The product of its digits is 5267275776, while the sum is 81.

Multiplying 6422787999684 by its sum of digits (81), we get a square (520245827974404 = 22808898²).

The spelling of 6422787999684 in words is "six trillion, four hundred twenty-two billion, seven hundred eighty-seven million, nine hundred ninety-nine thousand, six hundred eighty-four".