722056787 has 2 divisors, whose sum is σ = 722056788. Its totient is φ = 722056786.

The previous prime is 722056721. The next prime is 722056799. The reversal of 722056787 is 787650227.

It is a happy number.

722056787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722056787 is a prime.

It is not a weakly prime, because it can be changed into another prime (722056717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361028393 + 361028394.

It is an arithmetic number, because the mean of its divisors is an integer number (361028394).

Almost surely, 2^722056787 is an apocalyptic number.

722056787 is a deficient number, since it is larger than the sum of its proper divisors (1).

722056787 is an equidigital number, since it uses as much as digits as its factorization.

722056787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 329280, while the sum is 44.

The square root of 722056787 is about 26871.1143609639. The cubic root of 722056787 is about 897.1335911697.

The spelling of 722056787 in words is "seven hundred twenty-two million, fifty-six thousand, seven hundred eighty-seven".