247375987 has 8 divisors (see below), whose sum is σ = 249265440. Its totient is φ = 245492160.

The previous prime is 247375957. The next prime is 247376011. The reversal of 247375987 is 789573742.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 247375987 - 2²³ = 238987379 is a prime.

It is a super-2 number, since 2×247375987² = 122389757888448338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247375957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130714 + ... + 132592.

It is an arithmetic number, because the mean of its divisors is an integer number (31158180).

Almost surely, 2^247375987 is an apocalyptic number.

247375987 is a deficient number, since it is larger than the sum of its proper divisors (1889453).

247375987 is a wasteful number, since it uses less digits than its factorization.

247375987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813.

The product of its digits is 2963520, while the sum is 52.

The square root of 247375987 is about 15728.1908368382. The cubic root of 247375987 is about 627.7487356416.

The spelling of 247375987 in words is "two hundred forty-seven million, three hundred seventy-five thousand, nine hundred eighty-seven".