73870505 has 4 divisors (see below), whose sum is σ = 88644612. Its totient is φ = 59096400.

The previous prime is 73870501. The next prime is 73870513. The reversal of 73870505 is 50507837.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9357481 + 64513024 = 3059^2 + 8032^2 .

It is not a de Polignac number, because 73870505 - 2² = 73870501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73870501) 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, 7387046 + ... + 7387055.

It is an arithmetic number, because the mean of its divisors is an integer number (22161153).

Almost surely, 2^73870505 is an apocalyptic number.

It is an amenable number.

73870505 is a deficient number, since it is larger than the sum of its proper divisors (14774107).

73870505 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 73870505 = (38775005)₁₁.

73870505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14774106.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 73870505 is about 8594.7952273454. The cubic root of 73870505 is about 419.5886088887.

The spelling of 73870505 in words is "seventy-three million, eight hundred seventy thousand, five hundred five".