73973865 has 32 divisors (see below), whose sum is σ = 141152256. Its totient is φ = 32345280.

The previous prime is 73973827. The next prime is 73973869. The reversal of 73973865 is 56837937.

It is not a de Polignac number, because 73973865 - 2⁸ = 73973609 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 12901 + ... + 17730.

It is an arithmetic number, because the mean of its divisors is an integer number (4411008).

Almost surely, 2^73973865 is an apocalyptic number.

It is an amenable number.

73973865 is a deficient number, since it is larger than the sum of its proper divisors (67178391).

73973865 is a wasteful number, since it uses less digits than its factorization.

73973865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30669.

The product of its digits is 952560, while the sum is 48.

The square root of 73973865 is about 8600.8060668754. The cubic root of 73973865 is about 419.7842145507.

The spelling of 73973865 in words is "seventy-three million, nine hundred seventy-three thousand, eight hundred sixty-five".