70722571 has 4 divisors (see below), whose sum is σ = 70741000. Its totient is φ = 70704144.

The previous prime is 70722529. The next prime is 70722583. The reversal of 70722571 is 17522707.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70722571 - 2¹⁵ = 70689803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70726571) 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, 1041 + ... + 11938.

It is an arithmetic number, because the mean of its divisors is an integer number (17685250).

Almost surely, 2^70722571 is an apocalyptic number.

70722571 is a deficient number, since it is larger than the sum of its proper divisors (18429).

70722571 is a wasteful number, since it uses less digits than its factorization.

70722571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18428.

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 70722571 is about 8409.6712777611. The cubic root of 70722571 is about 413.5417362311.

The spelling of 70722571 in words is "seventy million, seven hundred twenty-two thousand, five hundred seventy-one".