73406645 has 8 divisors (see below), whose sum is σ = 94864056. Its totient is φ = 54207936.

The previous prime is 73406609. The next prime is 73406651. The reversal of 73406645 is 54660437.

It can be written as a sum of positive squares in 4 ways, for example, as 8491396 + 64915249 = 2914^2 + 8057^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73406645 - 2⁶ = 73406581 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 564602 + ... + 564731.

It is an arithmetic number, because the mean of its divisors is an integer number (11858007).

Almost surely, 2^73406645 is an apocalyptic number.

It is an amenable number.

73406645 is a deficient number, since it is larger than the sum of its proper divisors (21457411).

73406645 is a wasteful number, since it uses less digits than its factorization.

73406645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129351.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 73406645 is about 8567.7677956397. The cubic root of 73406645 is about 418.7085138970.

The spelling of 73406645 in words is "seventy-three million, four hundred six thousand, six hundred forty-five".