71828605 has 4 divisors (see below), whose sum is σ = 86194332. Its totient is φ = 57462880.

The previous prime is 71828573. The next prime is 71828611. The reversal of 71828605 is 50682817.

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 50168889 + 21659716 = 7083^2 + 4654^2 .

It is not a de Polignac number, because 71828605 - 2⁵ = 71828573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7182856 + ... + 7182865.

It is an arithmetic number, because the mean of its divisors is an integer number (21548583).

Almost surely, 2^71828605 is an apocalyptic number.

It is an amenable number.

71828605 is a deficient number, since it is larger than the sum of its proper divisors (14365727).

71828605 is a wasteful number, since it uses less digits than its factorization.

71828605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14365726.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 71828605 is about 8475.1758093859. The cubic root of 71828605 is about 415.6863949480.

The spelling of 71828605 in words is "seventy-one million, eight hundred twenty-eight thousand, six hundred five".