73400669 has 2 divisors, whose sum is σ = 73400670. Its totient is φ = 73400668.

The previous prime is 73400641. The next prime is 73400671. The reversal of 73400669 is 96600437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64609444 + 8791225 = 8038^2 + 2965^2 .

It is a cyclic number.

It is not a de Polignac number, because 73400669 - 2⁸ = 73400413 is a prime.

It is a super-2 number, since 2×73400669² = 10775316419295122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 73400671, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73400869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36700334 + 36700335.

It is an arithmetic number, because the mean of its divisors is an integer number (36700335).

Almost surely, 2^73400669 is an apocalyptic number.

It is an amenable number.

73400669 is a deficient number, since it is larger than the sum of its proper divisors (1).

73400669 is an equidigital number, since it uses as much as digits as its factorization.

73400669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 73400669 is about 8567.4190395941. The cubic root of 73400669 is about 418.6971513018.

The spelling of 73400669 in words is "seventy-three million, four hundred thousand, six hundred sixty-nine".