997760222862 has 64 divisors (see below), whose sum is σ = 2189017474560. Its totient is φ = 301306518144.

The previous prime is 997760222857. The next prime is 997760222873. The reversal of 997760222862 is 268222067799.

It is a junction number, because it is equal to n+sod(n) for n = 997760222796 and 997760222805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2644183 + ... + 2997869.

It is an arithmetic number, because the mean of its divisors is an integer number (34203398040).

Almost surely, 2^997760222862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997760222862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1094508737280).

997760222862 is an abundant number, since it is smaller than the sum of its proper divisors (1191257251698).

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

997760222862 is a wasteful number, since it uses less digits than its factorization.

997760222862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354377.

The product of its (nonzero) digits is 18289152, while the sum is 60.

The spelling of 997760222862 in words is "nine hundred ninety-seven billion, seven hundred sixty million, two hundred twenty-two thousand, eight hundred sixty-two".