73009660 has 12 divisors (see below), whose sum is σ = 153320328. Its totient is φ = 29203856.

The previous prime is 73009649. The next prime is 73009661. The reversal of 73009660 is 6690037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73009661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1825222 + ... + 1825261.

It is an arithmetic number, because the mean of its divisors is an integer number (12776694).

Almost surely, 2^73009660 is an apocalyptic number.

It is an amenable number.

73009660 is an abundant number, since it is smaller than the sum of its proper divisors (80310668).

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

73009660 is a wasteful number, since it uses less digits than its factorization.

73009660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650492 (or 3650490 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 73009660 is about 8544.5690353581. The cubic root of 73009660 is about 417.9523537185.

Adding to 73009660 its reverse (6690037), we get a palindrome (79699697).

The spelling of 73009660 in words is "seventy-three million, nine thousand, six hundred sixty".