73897605 has 24 divisors (see below), whose sum is σ = 128643840. Its totient is φ = 39241440.

The previous prime is 73897601. The next prime is 73897619. The reversal of 73897605 is 50679837.

It is a happy number.

73897605 is a `hidden beast` number, since 7 + 38 + 9 + 7 + 605 = 666.

It is not a de Polignac number, because 73897605 - 2² = 73897601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73897601) 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 in 23 ways as a sum of consecutive naturals, for example, 7320 + ... + 14190.

It is an arithmetic number, because the mean of its divisors is an integer number (5360160).

Almost surely, 2^73897605 is an apocalyptic number.

It is an amenable number.

73897605 is a deficient number, since it is larger than the sum of its proper divisors (54746235).

73897605 is a wasteful number, since it uses less digits than its factorization.

73897605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7121 (or 7118 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 73897605 is about 8596.3716183050. The cubic root of 73897605 is about 419.6399124551.

The spelling of 73897605 in words is "seventy-three million, eight hundred ninety-seven thousand, six hundred five".