73166137 has 4 divisors (see below), whose sum is σ = 79817616. Its totient is φ = 66514660.

The previous prime is 73166111. The next prime is 73166143.

It is a happy number.

73166137 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73166137 - 2¹⁵ = 73133369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73166237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3325723 + ... + 3325744.

It is an arithmetic number, because the mean of its divisors is an integer number (19954404).

Almost surely, 2^73166137 is an apocalyptic number.

It is an amenable number.

73166137 is a deficient number, since it is larger than the sum of its proper divisors (6651479).

73166137 is a wasteful number, since it uses less digits than its factorization.

73166137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6651478.

The product of its digits is 15876, while the sum is 34.

The square root of 73166137 is about 8553.7206524413. The cubic root of 73166137 is about 418.2507309628.

The spelling of 73166137 in words is "seventy-three million, one hundred sixty-six thousand, one hundred thirty-seven".