73897816 has 8 divisors (see below), whose sum is σ = 138558420. Its totient is φ = 36948904.

The previous prime is 73897787. The next prime is 73897841. The reversal of 73897816 is 61879837.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 73897816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4618606 + ... + 4618621.

Almost surely, 2^73897816 is an apocalyptic number.

It is an amenable number.

73897816 is a deficient number, since it is larger than the sum of its proper divisors (64660604).

73897816 is a wasteful number, since it uses less digits than its factorization.

73897816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9237233 (or 9237229 counting only the distinct ones).

The product of its digits is 508032, while the sum is 49.

The square root of 73897816 is about 8596.3838909160. The cubic root of 73897816 is about 419.6403118544.

The spelling of 73897816 in words is "seventy-three million, eight hundred ninety-seven thousand, eight hundred sixteen".