70722005 has 16 divisors (see below), whose sum is σ = 88128000. Its totient is φ = 54425280.

The previous prime is 70721999. The next prime is 70722019. The reversal of 70722005 is 50022707.

It is not a de Polignac number, because 70722005 - 2²⁴ = 53944789 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 26471 + ... + 29019.

It is an arithmetic number, because the mean of its divisors is an integer number (5508000).

Almost surely, 2^70722005 is an apocalyptic number.

It is an amenable number.

70722005 is a deficient number, since it is larger than the sum of its proper divisors (17405995).

70722005 is a wasteful number, since it uses less digits than its factorization.

70722005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764.

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 70722005 is about 8409.6376259623. The cubic root of 70722005 is about 413.5406330225.

The spelling of 70722005 in words is "seventy million, seven hundred twenty-two thousand, five".