722636047 has 8 divisors (see below), whose sum is σ = 827657216. Its totient is φ = 618061752.

The previous prime is 722636039. The next prime is 722636059. The reversal of 722636047 is 740636227.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 722636047 - 2³ = 722636039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 722635997 and 722636015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722636087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108243 + ... + 114724.

It is an arithmetic number, because the mean of its divisors is an integer number (103457152).

Almost surely, 2^722636047 is an apocalyptic number.

722636047 is a deficient number, since it is larger than the sum of its proper divisors (105021169).

722636047 is a wasteful number, since it uses less digits than its factorization.

722636047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223437.

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 722636047 is about 26881.8906887146. The cubic root of 722636047 is about 897.3734313542.

The spelling of 722636047 in words is "seven hundred twenty-two million, six hundred thirty-six thousand, forty-seven".