797643 has 24 divisors (see below), whose sum is σ = 1437696. Its totient is φ = 414000.

The previous prime is 797633. The next prime is 797647. The reversal of 797643 is 346797.

797643 is a `hidden beast` number, since 7 + 9 + 7 + 643 = 666.

It is not a de Polignac number, because 797643 - 2⁴ = 797627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 797598 and 797607.

It is not an unprimeable number, because it can be changed into a prime (797647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118 + ... + 1268.

It is an arithmetic number, because the mean of its divisors is an integer number (59904).

2⁷⁹⁷⁶⁴³ is an apocalyptic number.

797643 is a deficient number, since it is larger than the sum of its proper divisors (640053).

797643 is a wasteful number, since it uses less digits than its factorization.

797643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175 (or 1172 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 797643 is about 893.1086160149. The cubic root of 797643 is about 92.7405184496.

The spelling of 797643 in words is "seven hundred ninety-seven thousand, six hundred forty-three".