73646740 has 12 divisors (see below), whose sum is σ = 154658196. Its totient is φ = 29458688.

The previous prime is 73646719. The next prime is 73646773. The reversal of 73646740 is 4764637.

It can be written as a sum of positive squares in 2 ways, for example, as 50951044 + 22695696 = 7138^2 + 4764^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 73646740.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1841149 + ... + 1841188.

It is an arithmetic number, because the mean of its divisors is an integer number (12888183).

Almost surely, 2^73646740 is an apocalyptic number.

It is an amenable number.

73646740 is an abundant number, since it is smaller than the sum of its proper divisors (81011456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73646740 is a wasteful number, since it uses less digits than its factorization.

73646740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682346 (or 3682344 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 73646740 is about 8581.7678831346. The cubic root of 73646740 is about 419.1645144704.

The spelling of 73646740 in words is "seventy-three million, six hundred forty-six thousand, seven hundred forty".