70722241 has 4 divisors (see below), whose sum is σ = 71881684. Its totient is φ = 69562800.

The previous prime is 70722221. The next prime is 70722247. The reversal of 70722241 is 14222707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14222707 = 31 ⋅458797.

It can be written as a sum of positive squares in 2 ways, for example, as 8643600 + 62078641 = 2940^2 + 7879^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70722241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70722247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579630 + ... + 579751.

It is an arithmetic number, because the mean of its divisors is an integer number (17970421).

Almost surely, 2^70722241 is an apocalyptic number.

It is an amenable number.

70722241 is a deficient number, since it is larger than the sum of its proper divisors (1159443).

70722241 is a wasteful number, since it uses less digits than its factorization.

70722241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159442.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 70722241 is about 8409.6516574707. The cubic root of 70722241 is about 413.5410930183.

Adding to 70722241 its reverse (14222707), we get a palindrome (84944948).

The spelling of 70722241 in words is "seventy million, seven hundred twenty-two thousand, two hundred forty-one".