722145461 has 8 divisors (see below), whose sum is σ = 732615840. Its totient is φ = 711744208.

The previous prime is 722145451. The next prime is 722145481. The reversal of 722145461 is 164541227.

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 722145461 - 2¹⁸ = 721883317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722145451) 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, 3950 + ... + 38208.

It is an arithmetic number, because the mean of its divisors is an integer number (91576980).

Almost surely, 2^722145461 is an apocalyptic number.

It is an amenable number.

722145461 is a deficient number, since it is larger than the sum of its proper divisors (10470379).

722145461 is a wasteful number, since it uses less digits than its factorization.

722145461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34563.

The product of its digits is 13440, while the sum is 32.

The square root of 722145461 is about 26872.7642977048. The cubic root of 722145461 is about 897.1703145822.

Adding to 722145461 its reverse (164541227), we get a palindrome (886686688).

The spelling of 722145461 in words is "seven hundred twenty-two million, one hundred forty-five thousand, four hundred sixty-one".