797561783 has 8 divisors (see below), whose sum is σ = 845266752. Its totient is φ = 749944576.

The previous prime is 797561767. The next prime is 797561827. The reversal of 797561783 is 387165797.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 797561783 - 2⁴ = 797561767 is a prime.

It is a super-2 number, since 2×797561783² = 1272209595404278178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797561983) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2735 + ... + 40032.

It is an arithmetic number, because the mean of its divisors is an integer number (105658344).

Almost surely, 2^797561783 is an apocalyptic number.

797561783 is a deficient number, since it is larger than the sum of its proper divisors (47704969).

797561783 is a wasteful number, since it uses less digits than its factorization.

797561783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43881.

The product of its digits is 2222640, while the sum is 53.

The square root of 797561783 is about 28241.1363616976. The cubic root of 797561783 is about 927.3737069124.

The spelling of 797561783 in words is "seven hundred ninety-seven million, five hundred sixty-one thousand, seven hundred eighty-three".