73412881 has 2 divisors, whose sum is σ = 73412882. Its totient is φ = 73412880.

The previous prime is 73412879. The next prime is 73412887. The reversal of 73412881 is 18821437.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42510400 + 30902481 = 6520^2 + 5559^2 .

It is an emirp because it is prime and its reverse (18821437) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73412881 - 2¹ = 73412879 is a prime.

It is a super-2 number, since 2×73412881² = 10778902193440322, which contains 22 as substring.

Together with 73412879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73412887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36706440 + 36706441.

It is an arithmetic number, because the mean of its divisors is an integer number (36706441).

Almost surely, 2^73412881 is an apocalyptic number.

It is an amenable number.

73412881 is a deficient number, since it is larger than the sum of its proper divisors (1).

73412881 is an equidigital number, since it uses as much as digits as its factorization.

73412881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 34.

The square root of 73412881 is about 8568.1317100054. The cubic root of 73412881 is about 418.7203701913.

The spelling of 73412881 in words is "seventy-three million, four hundred twelve thousand, eight hundred eighty-one".