957643 has 2 divisors, whose sum is σ = 957644. Its totient is φ = 957642.

The previous prime is 957641. The next prime is 957659. The reversal of 957643 is 346759.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 957643 - 2¹ = 957641 is a prime.

Together with 957641, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 957599 and 957608.

It is not a weakly prime, because it can be changed into another prime (957641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478821 + 478822.

It is an arithmetic number, because the mean of its divisors is an integer number (478822).

2⁹⁵⁷⁶⁴³ is an apocalyptic number.

957643 is a deficient number, since it is larger than the sum of its proper divisors (1).

957643 is an equidigital number, since it uses as much as digits as its factorization.

957643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 34.

The square root of 957643 is about 978.5923563977. The cubic root of 957643 is about 98.5676826174.

It can be divided in two parts, 957 and 643, that added together give a square (1600 = 40²).

The spelling of 957643 in words is "nine hundred fifty-seven thousand, six hundred forty-three".