73290887 has 2 divisors, whose sum is σ = 73290888. Its totient is φ = 73290886.

The previous prime is 73290883. The next prime is 73290901. The reversal of 73290887 is 78809237.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73290887 - 2² = 73290883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73290883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36645443 + 36645444.

It is an arithmetic number, because the mean of its divisors is an integer number (36645444).

Almost surely, 2^73290887 is an apocalyptic number.

73290887 is a deficient number, since it is larger than the sum of its proper divisors (1).

73290887 is an equidigital number, since it uses as much as digits as its factorization.

73290887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 73290887 is about 8561.0096951236. The cubic root of 73290887 is about 418.4883051316.

It can be divided in two parts, 732 and 90887, that added together give a palindrome (91619).

The spelling of 73290887 in words is "seventy-three million, two hundred ninety thousand, eight hundred eighty-seven".