674157745 has 4 divisors (see below), whose sum is σ = 808989300. Its totient is φ = 539326192.

The previous prime is 674157739. The next prime is 674157811. The reversal of 674157745 is 547751476.

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 434805904 + 239351841 = 20852^2 + 15471^2 .

It is a cyclic number.

It is not a de Polignac number, because 674157745 - 2¹¹ = 674155697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 674157695 and 674157704.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67415770 + ... + 67415779.

It is an arithmetic number, because the mean of its divisors is an integer number (202247325).

Almost surely, 2^674157745 is an apocalyptic number.

It is an amenable number.

674157745 is a deficient number, since it is larger than the sum of its proper divisors (134831555).

674157745 is a wasteful number, since it uses less digits than its factorization.

674157745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134831554.

The product of its digits is 823200, while the sum is 46.

The square root of 674157745 is about 25964.5478489420. The cubic root of 674157745 is about 876.8403150037.

The spelling of 674157745 in words is "six hundred seventy-four million, one hundred fifty-seven thousand, seven hundred forty-five".