73684357 has 2 divisors, whose sum is σ = 73684358. Its totient is φ = 73684356.

The previous prime is 73684321. The next prime is 73684397. The reversal of 73684357 is 75348637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55442916 + 18241441 = 7446^2 + 4271^2 .

It is a cyclic number.

It is not a de Polignac number, because 73684357 - 2²³ = 65295749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73684397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36842178 + 36842179.

It is an arithmetic number, because the mean of its divisors is an integer number (36842179).

Almost surely, 2^73684357 is an apocalyptic number.

It is an amenable number.

73684357 is a deficient number, since it is larger than the sum of its proper divisors (1).

73684357 is an equidigital number, since it uses as much as digits as its factorization.

73684357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 43.

The square root of 73684357 is about 8583.9592846192. The cubic root of 73684357 is about 419.2358687386.

The spelling of 73684357 in words is "seventy-three million, six hundred eighty-four thousand, three hundred fifty-seven".