73157609 has 8 divisors (see below), whose sum is σ = 83835840. Its totient is φ = 62536176.

The previous prime is 73157599. The next prime is 73157629. The reversal of 73157609 is 90675137.

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 73157609 - 2¹² = 73153513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73157629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11399 + ... + 16620.

It is an arithmetic number, because the mean of its divisors is an integer number (10479480).

Almost surely, 2^73157609 is an apocalyptic number.

It is an amenable number.

73157609 is a deficient number, since it is larger than the sum of its proper divisors (10678231).

73157609 is a wasteful number, since it uses less digits than its factorization.

73157609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28399.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 73157609 is about 8553.2221413921. Note that the first 3 decimals coincide. The cubic root of 73157609 is about 418.2344803631.

The spelling of 73157609 in words is "seventy-three million, one hundred fifty-seven thousand, six hundred nine".