70722205 has 8 divisors (see below), whose sum is σ = 84996792. Its totient is φ = 56491008.

The previous prime is 70722203. The next prime is 70722221. The reversal of 70722205 is 50222707.

It can be written as a sum of positive squares in 4 ways, for example, as 1466521 + 69255684 = 1211^2 + 8322^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 70722205 - 2¹ = 70722203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70722205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70722203) 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 7 ways as a sum of consecutive naturals, for example, 7144 + ... + 13873.

It is an arithmetic number, because the mean of its divisors is an integer number (10624599).

Almost surely, 2^70722205 is an apocalyptic number.

It is an amenable number.

70722205 is a deficient number, since it is larger than the sum of its proper divisors (14274587).

70722205 is a wasteful number, since it uses less digits than its factorization.

70722205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21695.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 70722205 is about 8409.6495170726. The cubic root of 70722205 is about 413.5410228495.

The spelling of 70722205 in words is "seventy million, seven hundred twenty-two thousand, two hundred five".