73508861 has 2 divisors, whose sum is σ = 73508862. Its totient is φ = 73508860.

The previous prime is 73508839. The next prime is 73508879. The reversal of 73508861 is 16880537.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54096025 + 19412836 = 7355^2 + 4406^2 .

It is an emirp because it is prime and its reverse (16880537) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73508861 - 2¹⁴ = 73492477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73508821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36754430 + 36754431.

It is an arithmetic number, because the mean of its divisors is an integer number (36754431).

Almost surely, 2^73508861 is an apocalyptic number.

It is an amenable number.

73508861 is a deficient number, since it is larger than the sum of its proper divisors (1).

73508861 is an equidigital number, since it uses as much as digits as its factorization.

73508861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 73508861 is about 8573.7308681810. The cubic root of 73508861 is about 418.9027690611.

The spelling of 73508861 in words is "seventy-three million, five hundred eight thousand, eight hundred sixty-one".