67500505 has 8 divisors (see below), whose sum is σ = 81130824. Its totient is φ = 53913600.

The previous prime is 67500491. The next prime is 67500529. The reversal of 67500505 is 50500576.

It can be written as a sum of positive squares in 4 ways, for example, as 41886784 + 25613721 = 6472^2 + 5061^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67500505 - 2²¹ = 65403353 is a prime.

It is a super-3 number, since 3×67500505³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7326 + ... + 13735.

It is an arithmetic number, because the mean of its divisors is an integer number (10141353).

Almost surely, 2^67500505 is an apocalyptic number.

It is an amenable number.

67500505 is a deficient number, since it is larger than the sum of its proper divisors (13630319).

67500505 is a wasteful number, since it uses less digits than its factorization.

67500505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21707.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 67500505 is about 8215.8690958413. The cubic root of 67500505 is about 407.1636578800.

The spelling of 67500505 in words is "sixty-seven million, five hundred thousand, five hundred five".