797645340 has 96 divisors (see below), whose sum is σ = 2487663360. Its totient is φ = 212182848.

The previous prime is 797645339. The next prime is 797645341. The reversal of 797645340 is 43546797.

797645340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (797645339) and next prime (797645341).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797645341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250599 + ... + 253761.

It is an arithmetic number, because the mean of its divisors is an integer number (25913160).

Almost surely, 2^797645340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 797645340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1243831680).

797645340 is an abundant number, since it is smaller than the sum of its proper divisors (1690018020).

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

797645340 is a wasteful number, since it uses less digits than its factorization.

797645340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3648 (or 3640 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 797645340 is about 28242.6156720655. The cubic root of 797645340 is about 927.4060913875.

The spelling of 797645340 in words is "seven hundred ninety-seven million, six hundred forty-five thousand, three hundred forty".