1613669 has 2 divisors, whose sum is σ = 1613670. Its totient is φ = 1613668.

The previous prime is 1613653. The next prime is 1613671. The reversal of 1613669 is 9663161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1592644 + 21025 = 1262^2 + 145^2 .

It is an emirp because it is prime and its reverse (9663161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1613669 - 2⁴ = 1613653 is a prime.

It is a super-2 number, since 2×1613669² = 5207855283122, which contains 22 as substring.

Together with 1613671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1613609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806834 + 806835.

It is an arithmetic number, because the mean of its divisors is an integer number (806835).

2^1613669 is an apocalyptic number.

It is an amenable number.

1613669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613669 is an equidigital number, since it uses as much as digits as its factorization.

1613669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 32.

The square root of 1613669 is about 1270.3027198270. The cubic root of 1613669 is about 117.2928355057.

The spelling of 1613669 in words is "one million, six hundred thirteen thousand, six hundred sixty-nine".