73204657 has 2 divisors, whose sum is σ = 73204658. Its totient is φ = 73204656.

The previous prime is 73204633. The next prime is 73204667. The reversal of 73204657 is 75640237.

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., 69822736 + 3381921 = 8356^2 + 1839^2 .

It is an emirp because it is prime and its reverse (75640237) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73204657 - 2¹¹ = 73202609 is a prime.

It is not a weakly prime, because it can be changed into another prime (73204627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36602328 + 36602329.

It is an arithmetic number, because the mean of its divisors is an integer number (36602329).

Almost surely, 2^73204657 is an apocalyptic number.

It is an amenable number.

73204657 is a deficient number, since it is larger than the sum of its proper divisors (1).

73204657 is an equidigital number, since it uses as much as digits as its factorization.

73204657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 73204657 is about 8555.9720079018. The cubic root of 73204657 is about 418.3241173330.

The spelling of 73204657 in words is "seventy-three million, two hundred four thousand, six hundred fifty-seven".