73628081 has 2 divisors, whose sum is σ = 73628082. Its totient is φ = 73628080.

The previous prime is 73628041. The next prime is 73628099. The reversal of 73628081 is 18082637.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48427681 + 25200400 = 6959^2 + 5020^2 .

It is an emirp because it is prime and its reverse (18082637) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73628081 - 2¹⁴ = 73611697 is a prime.

It is a super-2 number, since 2×73628081² = 10842188623485122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (73628041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36814040 + 36814041.

It is an arithmetic number, because the mean of its divisors is an integer number (36814041).

Almost surely, 2^73628081 is an apocalyptic number.

It is an amenable number.

73628081 is a deficient number, since it is larger than the sum of its proper divisors (1).

73628081 is an equidigital number, since it uses as much as digits as its factorization.

73628081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 73628081 is about 8580.6806839551. The cubic root of 73628081 is about 419.1291119019.

The spelling of 73628081 in words is "seventy-three million, six hundred twenty-eight thousand, eighty-one".