656801343 has 12 divisors (see below), whose sum is σ = 1034959848. Its totient is φ = 398061360.

The previous prime is 656801323. The next prime is 656801351. The reversal of 656801343 is 343108656.

It is not a de Polignac number, because 656801343 - 2¹⁸ = 656539199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 656801298 and 656801307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656801323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3317080 + ... + 3317277.

It is an arithmetic number, because the mean of its divisors is an integer number (86246654).

Almost surely, 2^656801343 is an apocalyptic number.

656801343 is a deficient number, since it is larger than the sum of its proper divisors (378158505).

656801343 is a wasteful number, since it uses less digits than its factorization.

656801343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6634374 (or 6634371 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 656801343 is about 25628.1357691113. The cubic root of 656801343 is about 869.2499560157.

Adding to 656801343 its reverse (343108656), we get a palindrome (999909999).

The spelling of 656801343 in words is "six hundred fifty-six million, eight hundred one thousand, three hundred forty-three".