723661051 has 2 divisors, whose sum is σ = 723661052. Its totient is φ = 723661050.

The previous prime is 723661033. The next prime is 723661087. The reversal of 723661051 is 150166327.

723661051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (150166327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 723661051 - 2¹¹ = 723659003 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (723661451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361830525 + 361830526.

It is an arithmetic number, because the mean of its divisors is an integer number (361830526).

Almost surely, 2^723661051 is an apocalyptic number.

723661051 is a deficient number, since it is larger than the sum of its proper divisors (1).

723661051 is an equidigital number, since it uses as much as digits as its factorization.

723661051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 723661051 is about 26900.9488866099. The cubic root of 723661051 is about 897.7975161148.

The spelling of 723661051 in words is "seven hundred twenty-three million, six hundred sixty-one thousand, fifty-one".