745434673 has 4 divisors (see below), whose sum is σ = 750875940. Its totient is φ = 739993408.

The previous prime is 745434661. The next prime is 745434691. The reversal of 745434673 is 376434547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 376434547 = 601 ⋅626347.

It can be written as a sum of positive squares in 2 ways, for example, as 377447184 + 367987489 = 19428^2 + 19183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745434673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745434973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2720428 + ... + 2720701.

It is an arithmetic number, because the mean of its divisors is an integer number (187718985).

Almost surely, 2^745434673 is an apocalyptic number.

It is an amenable number.

745434673 is a deficient number, since it is larger than the sum of its proper divisors (5441267).

745434673 is a wasteful number, since it uses less digits than its factorization.

745434673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5441266.

The product of its digits is 846720, while the sum is 43.

The square root of 745434673 is about 27302.6495600702. The cubic root of 745434673 is about 906.7130432563.

The spelling of 745434673 in words is "seven hundred forty-five million, four hundred thirty-four thousand, six hundred seventy-three".