827147245 has 4 divisors (see below), whose sum is σ = 992576700. Its totient is φ = 661717792.

The previous prime is 827147201. The next prime is 827147287. The reversal of 827147245 is 542741728.

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 616926244 + 210221001 = 24838^2 + 14499^2 .

It is a cyclic number.

It is not a de Polignac number, because 827147245 - 2⁷ = 827147117 is a prime.

It is a super-2 number, since 2×827147245² = 1368345129822180050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 827147198 and 827147207.

It is a congruent number.

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, 82714720 + ... + 82714729.

It is an arithmetic number, because the mean of its divisors is an integer number (248144175).

Almost surely, 2^827147245 is an apocalyptic number.

It is an amenable number.

827147245 is a deficient number, since it is larger than the sum of its proper divisors (165429455).

827147245 is a wasteful number, since it uses less digits than its factorization.

827147245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165429454.

The product of its digits is 125440, while the sum is 40.

The square root of 827147245 is about 28760.1676803179. The cubic root of 827147245 is about 938.7017103971.

The spelling of 827147245 in words is "eight hundred twenty-seven million, one hundred forty-seven thousand, two hundred forty-five".