73440068 has 24 divisors (see below), whose sum is σ = 146549592. Its totient is φ = 31901184.

The previous prime is 73440053. The next prime is 73440077. The reversal of 73440068 is 86004437.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8282884 + 65157184 = 2878^2 + 8072^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40655 + ... + 42422.

It is an arithmetic number, because the mean of its divisors is an integer number (6106233).

Almost surely, 2^73440068 is an apocalyptic number.

It is an amenable number.

73440068 is a deficient number, since it is larger than the sum of its proper divisors (73109524).

73440068 is a wasteful number, since it uses less digits than its factorization.

73440068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83111 (or 83109 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 73440068 is about 8569.7180817107. The cubic root of 73440068 is about 418.7720520651.

The spelling of 73440068 in words is "seventy-three million, four hundred forty thousand, sixty-eight".