1301669 has 2 divisors, whose sum is σ = 1301670. Its totient is φ = 1301668.

The previous prime is 1301621. The next prime is 1301693. The reversal of 1301669 is 9661031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1188100 + 113569 = 1090^2 + 337^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301669 - 2⁸ = 1301413 is a prime.

It is a super-2 number, since 2×1301669² = 3388684371122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1300669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650834 + 650835.

It is an arithmetic number, because the mean of its divisors is an integer number (650835).

2^1301669 is an apocalyptic number.

It is an amenable number.

1301669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301669 is an equidigital number, since it uses as much as digits as its factorization.

1301669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1301669 is about 1140.9070952536. The cubic root of 1301669 is about 109.1859743511.

The spelling of 1301669 in words is "one million, three hundred one thousand, six hundred sixty-nine".