1370857 has 2 divisors, whose sum is σ = 1370858. Its totient is φ = 1370856.

The previous prime is 1370839. The next prime is 1370861. The reversal of 1370857 is 7580731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1104601 + 266256 = 1051^2 + 516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1370857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1370657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685428 + 685429.

It is an arithmetic number, because the mean of its divisors is an integer number (685429).

2^1370857 is an apocalyptic number.

It is an amenable number.

1370857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1370857 is an equidigital number, since it uses as much as digits as its factorization.

1370857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 1370857 is about 1170.8360260942. The cubic root of 1370857 is about 111.0872079322.

The spelling of 1370857 in words is "one million, three hundred seventy thousand, eight hundred fifty-seven".