745172668 has 24 divisors (see below), whose sum is σ = 1348928000. Its totient is φ = 359814960.

The previous prime is 745172651. The next prime is 745172669. The reversal of 745172668 is 866271547.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745172669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55855 + ... + 67897.

Almost surely, 2^745172668 is an apocalyptic number.

It is an amenable number.

745172668 is a deficient number, since it is larger than the sum of its proper divisors (603755332).

745172668 is a wasteful number, since it uses less digits than its factorization.

745172668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12577 (or 12575 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The square root of 745172668 is about 27297.8509776869. The cubic root of 745172668 is about 906.6068004614.

The spelling of 745172668 in words is "seven hundred forty-five million, one hundred seventy-two thousand, six hundred sixty-eight".