701206721 has 16 divisors (see below), whose sum is σ = 733598208. Its totient is φ = 669614400.

The previous prime is 701206711. The next prime is 701206733. The reversal of 701206721 is 127602107.

It is a cyclic number.

It is not a de Polignac number, because 701206721 - 2²² = 697012417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (701206711) 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 15 ways as a sum of consecutive naturals, for example, 769256 + ... + 770166.

It is an arithmetic number, because the mean of its divisors is an integer number (45849888).

Almost surely, 2^701206721 is an apocalyptic number.

701206721 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

701206721 is a deficient number, since it is larger than the sum of its proper divisors (32391487).

701206721 is a wasteful number, since it uses less digits than its factorization.

701206721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 701206721 is about 26480.3081741886. The cubic root of 701206721 is about 888.4139242694.

Adding to 701206721 its reverse (127602107), we get a palindrome (828808828).

The spelling of 701206721 in words is "seven hundred one million, two hundred six thousand, seven hundred twenty-one".