73000061 has 2 divisors, whose sum is σ = 73000062. Its totient is φ = 73000060.

The previous prime is 73000043. The next prime is 73000063. The reversal of 73000061 is 16000037.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72352036 + 648025 = 8506^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 73000061 - 2²² = 68805757 is a prime.

Together with 73000063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73000063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36500030 + 36500031.

It is an arithmetic number, because the mean of its divisors is an integer number (36500031).

Almost surely, 2^73000061 is an apocalyptic number.

It is an amenable number.

73000061 is a deficient number, since it is larger than the sum of its proper divisors (1).

73000061 is an equidigital number, since it uses as much as digits as its factorization.

73000061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 73000061 is about 8544.0073150718. The cubic root of 73000061 is about 417.9340360489.

Adding to 73000061 its reverse (16000037), we get a palindrome (89000098).

The spelling of 73000061 in words is "seventy-three million, sixty-one", and thus it is an aban number and an uban number.