73973864 has 16 divisors (see below), whose sum is σ = 141652800. Its totient is φ = 36199792.

The previous prime is 73973827. The next prime is 73973869. The reversal of 73973864 is 46837937.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (73973869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97994 + ... + 98745.

It is an arithmetic number, because the mean of its divisors is an integer number (8853300).

Almost surely, 2^73973864 is an apocalyptic number.

It is an amenable number.

73973864 is a deficient number, since it is larger than the sum of its proper divisors (67678936).

73973864 is a wasteful number, since it uses less digits than its factorization.

73973864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196792 (or 196788 counting only the distinct ones).

The product of its digits is 762048, while the sum is 47.

The square root of 73973864 is about 8600.8060087413. The cubic root of 73973864 is about 419.7842126591.

The spelling of 73973864 in words is "seventy-three million, nine hundred seventy-three thousand, eight hundred sixty-four".