745623145 has 8 divisors (see below), whose sum is σ = 947380104. Its totient is φ = 561410304.

The previous prime is 745623143. The next prime is 745623173. The reversal of 745623145 is 541326547.

745623145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 292444201 + 453178944 = 17101^2 + 21288^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 745623145 - 2¹ = 745623143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745623143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4385934 + ... + 4386103.

It is an arithmetic number, because the mean of its divisors is an integer number (118422513).

Almost surely, 2^745623145 is an apocalyptic number.

It is an amenable number.

745623145 is a deficient number, since it is larger than the sum of its proper divisors (201756959).

745623145 is a wasteful number, since it uses less digits than its factorization.

745623145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8772059.

The product of its digits is 100800, while the sum is 37.

The square root of 745623145 is about 27306.1008750792. The cubic root of 745623145 is about 906.7894530909.

The spelling of 745623145 in words is "seven hundred forty-five million, six hundred twenty-three thousand, one hundred forty-five".