72884705 has 4 divisors (see below), whose sum is σ = 87461652. Its totient is φ = 58307760.

The previous prime is 72884687. The next prime is 72884711. The reversal of 72884705 is 50748827.

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 32638369 + 40246336 = 5713^2 + 6344^2 .

It is not a de Polignac number, because 72884705 - 2⁶ = 72884641 is a prime.

It is a Duffinian 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, 7288466 + ... + 7288475.

It is an arithmetic number, because the mean of its divisors is an integer number (21865413).

Almost surely, 2^72884705 is an apocalyptic number.

It is an amenable number.

72884705 is a deficient number, since it is larger than the sum of its proper divisors (14576947).

72884705 is a wasteful number, since it uses less digits than its factorization.

72884705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14576946.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 72884705 is about 8537.2539496023. The cubic root of 72884705 is about 417.7137777137.

The spelling of 72884705 in words is "seventy-two million, eight hundred eighty-four thousand, seven hundred five".