1023857 has 2 divisors, whose sum is σ = 1023858. Its totient is φ = 1023856.

The previous prime is 1023851. The next prime is 1023871. The reversal of 1023857 is 7583201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1018081 + 5776 = 1009^2 + 76^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023857 - 2⁸ = 1023601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511928 + 511929.

It is an arithmetic number, because the mean of its divisors is an integer number (511929).

2^1023857 is an apocalyptic number.

It is an amenable number.

1023857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023857 is an equidigital number, since it uses as much as digits as its factorization.

1023857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1023857 is about 1011.8581916454. The cubic root of 1023857 is about 100.7889918797.

The spelling of 1023857 in words is "one million, twenty-three thousand, eight hundred fifty-seven".