745408997 has 2 divisors, whose sum is σ = 745408998. Its totient is φ = 745408996.

The previous prime is 745408967. The next prime is 745409023. The reversal of 745408997 is 799804547.

745408997 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 can be written as a sum of positive squares in only one way, i.e., 385965316 + 359443681 = 19646^2 + 18959^2 .

It is an emirp because it is prime and its reverse (799804547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745408997 - 2¹² = 745404901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745408967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372704498 + 372704499.

It is an arithmetic number, because the mean of its divisors is an integer number (372704499).

Almost surely, 2^745408997 is an apocalyptic number.

It is an amenable number.

745408997 is a deficient number, since it is larger than the sum of its proper divisors (1).

745408997 is an equidigital number, since it uses as much as digits as its factorization.

745408997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The square root of 745408997 is about 27302.1793452464. The cubic root of 745408997 is about 906.7026327614.

The spelling of 745408997 in words is "seven hundred forty-five million, four hundred eight thousand, nine hundred ninety-seven".