1370657 has 2 divisors, whose sum is σ = 1370658. Its totient is φ = 1370656.

The previous prime is 1370623. The next prime is 1370669. The reversal of 1370657 is 7560731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1366561 + 4096 = 1169^2 + 64^2 .

It is an emirp because it is prime and its reverse (7560731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1370657 - 2¹⁶ = 1305121 is a prime.

It is a super-2 number, since 2×1370657² = 3757401223298, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1370617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685328 + 685329.

It is an arithmetic number, because the mean of its divisors is an integer number (685329).

2^1370657 is an apocalyptic number.

It is an amenable number.

1370657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1370657 is an equidigital number, since it uses as much as digits as its factorization.

1370657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 1370657 is about 1170.7506139225. The cubic root of 1370657 is about 111.0818053453.

The spelling of 1370657 in words is "one million, three hundred seventy thousand, six hundred fifty-seven".