745623953 has 2 divisors, whose sum is σ = 745623954. Its totient is φ = 745623952.

The previous prime is 745623947. The next prime is 745624001. The reversal of 745623953 is 359326547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 594530689 + 151093264 = 24383^2 + 12292^2 .

It is an emirp because it is prime and its reverse (359326547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745623953 - 2¹² = 745619857 is a prime.

It is not a weakly prime, because it can be changed into another prime (745623653) 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 as a sum of consecutive naturals, namely, 372811976 + 372811977.

It is an arithmetic number, because the mean of its divisors is an integer number (372811977).

Almost surely, 2^745623953 is an apocalyptic number.

It is an amenable number.

745623953 is a deficient number, since it is larger than the sum of its proper divisors (1).

745623953 is an equidigital number, since it uses as much as digits as its factorization.

745623953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 44.

The square root of 745623953 is about 27306.1156703036. The cubic root of 745623953 is about 906.7897806405.

The spelling of 745623953 in words is "seven hundred forty-five million, six hundred twenty-three thousand, nine hundred fifty-three".