745179857 has 4 divisors (see below), whose sum is σ = 746115636. Its totient is φ = 744244080.

The previous prime is 745179847. The next prime is 745179871. The reversal of 745179857 is 758971547.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 370331536 + 374848321 = 19244^2 + 19361^2 .

It is a cyclic number.

It is not a de Polignac number, because 745179857 - 2⁶ = 745179793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 745179799 and 745179808.

It is not an unprimeable number, because it can be changed into a prime (745179817) 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, 466694 + ... + 468287.

It is an arithmetic number, because the mean of its divisors is an integer number (186528909).

Almost surely, 2^745179857 is an apocalyptic number.

It is an amenable number.

745179857 is a deficient number, since it is larger than the sum of its proper divisors (935779).

745179857 is an equidigital number, since it uses as much as digits as its factorization.

745179857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935778.

The product of its digits is 2469600, while the sum is 53.

The square root of 745179857 is about 27297.9826544014. The cubic root of 745179857 is about 906.6097159267.

The spelling of 745179857 in words is "seven hundred forty-five million, one hundred seventy-nine thousand, eight hundred fifty-seven".