247680265 has 16 divisors (see below), whose sum is σ = 339982848. Its totient is φ = 169684416.

The previous prime is 247680263. The next prime is 247680269. The reversal of 247680265 is 562086742.

It is a cyclic number.

It is not a de Polignac number, because 247680265 - 2¹ = 247680263 is a prime.

It is a super-2 number, since 2×247680265² = 122691027340940450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247680263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47319 + ... + 52291.

It is an arithmetic number, because the mean of its divisors is an integer number (21248928).

Almost surely, 2^247680265 is an apocalyptic number.

It is an amenable number.

247680265 is a deficient number, since it is larger than the sum of its proper divisors (92302583).

247680265 is a wasteful number, since it uses less digits than its factorization.

247680265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6408.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 247680265 is about 15737.8608775145. The cubic root of 247680265 is about 628.0060118496.

The spelling of 247680265 in words is "two hundred forty-seven million, six hundred eighty thousand, two hundred sixty-five".