673615669 has 2 divisors, whose sum is σ = 673615670. Its totient is φ = 673615668.

The previous prime is 673615643. The next prime is 673615687. The reversal of 673615669 is 966516376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 662393169 + 11222500 = 25737^2 + 3350^2 .

It is a cyclic number.

It is not a de Polignac number, because 673615669 - 2¹¹ = 673613621 is a prime.

It is a super-2 number, since 2×673615669² = 907516139044635122, 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 (673615469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336807834 + 336807835.

It is an arithmetic number, because the mean of its divisors is an integer number (336807835).

Almost surely, 2^673615669 is an apocalyptic number.

It is an amenable number.

673615669 is a deficient number, since it is larger than the sum of its proper divisors (1).

673615669 is an equidigital number, since it uses as much as digits as its factorization.

673615669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 49.

The square root of 673615669 is about 25954.1069775094. The cubic root of 673615669 is about 876.6052357275.

The spelling of 673615669 in words is "six hundred seventy-three million, six hundred fifteen thousand, six hundred sixty-nine".