247073245 has 32 divisors (see below), whose sum is σ = 330336000. Its totient is φ = 176546304.

The previous prime is 247073209. The next prime is 247073249. The reversal of 247073245 is 542370742.

It is a cyclic number.

It is not a de Polignac number, because 247073245 - 2⁷ = 247073117 is a prime.

It is a super-2 number, since 2×247073245² = 122090376789660050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247073245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247073249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158731 + ... + 160279.

It is an arithmetic number, because the mean of its divisors is an integer number (10323000).

Almost surely, 2^247073245 is an apocalyptic number.

It is an amenable number.

247073245 is a deficient number, since it is larger than the sum of its proper divisors (83262755).

247073245 is a wasteful number, since it uses less digits than its factorization.

247073245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669.

The product of its (nonzero) digits is 47040, while the sum is 34.

The square root of 247073245 is about 15718.5637066495. The cubic root of 247073245 is about 627.4925487070.

The spelling of 247073245 in words is "two hundred forty-seven million, seventy-three thousand, two hundred forty-five".