1679261 has 2 divisors, whose sum is σ = 1679262. Its totient is φ = 1679260.

The previous prime is 1679233. The next prime is 1679267. The reversal of 1679261 is 1629761.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1144900 + 534361 = 1070^2 + 731^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1679261 is a prime.

It is a super-2 number, since 2×1679261² = 5639835012242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1679267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839630 + 839631.

It is an arithmetic number, because the mean of its divisors is an integer number (839631).

2^1679261 is an apocalyptic number.

It is an amenable number.

1679261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1679261 is an equidigital number, since it uses as much as digits as its factorization.

1679261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 32.

The square root of 1679261 is about 1295.8630328858. The cubic root of 1679261 is about 118.8610057118.

The spelling of 1679261 in words is "one million, six hundred seventy-nine thousand, two hundred sixty-one".