722147401 has 2 divisors, whose sum is σ = 722147402. Its totient is φ = 722147400.

The previous prime is 722147381. The next prime is 722147407. The reversal of 722147401 is 104741227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 462293001 + 259854400 = 21501^2 + 16120^2 .

It is an emirp because it is prime and its reverse (104741227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722147401 - 2¹⁵ = 722114633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 722147401.

It is not a weakly prime, because it can be changed into another prime (722147407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361073700 + 361073701.

It is an arithmetic number, because the mean of its divisors is an integer number (361073701).

Almost surely, 2^722147401 is an apocalyptic number.

It is an amenable number.

722147401 is a deficient number, since it is larger than the sum of its proper divisors (1).

722147401 is an equidigital number, since it uses as much as digits as its factorization.

722147401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 722147401 is about 26872.8003937066. The cubic root of 722147401 is about 897.1711179794.

Adding to 722147401 its reverse (104741227), we get a palindrome (826888628).

The spelling of 722147401 in words is "seven hundred twenty-two million, one hundred forty-seven thousand, four hundred one".