722431061 has 4 divisors (see below), whose sum is σ = 788106624. Its totient is φ = 656755500.

The previous prime is 722431043. The next prime is 722431097. The reversal of 722431061 is 160134227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 160134227 = 11 ⋅14557657.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722431061 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 722431061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722431361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32837765 + ... + 32837786.

It is an arithmetic number, because the mean of its divisors is an integer number (197026656).

Almost surely, 2^722431061 is an apocalyptic number.

It is an amenable number.

722431061 is a deficient number, since it is larger than the sum of its proper divisors (65675563).

722431061 is a wasteful number, since it uses less digits than its factorization.

722431061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65675562.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 722431061 is about 26878.0777028418. The cubic root of 722431061 is about 897.2885724145.

Adding to 722431061 its reverse (160134227), we get a palindrome (882565288).

The spelling of 722431061 in words is "seven hundred twenty-two million, four hundred thirty-one thousand, sixty-one".