247007487 has 4 divisors (see below), whose sum is σ = 329343320. Its totient is φ = 164671656.

The previous prime is 247007479. The next prime is 247007489. The reversal of 247007487 is 784700742.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 247007487 - 2³ = 247007479 is a prime.

It is a super-2 number, since 2×247007487² = 122025397268110338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247007489) 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 3 ways as a sum of consecutive naturals, for example, 41167912 + ... + 41167917.

It is an arithmetic number, because the mean of its divisors is an integer number (82335830).

Almost surely, 2^247007487 is an apocalyptic number.

247007487 is a deficient number, since it is larger than the sum of its proper divisors (82335833).

247007487 is an equidigital number, since it uses as much as digits as its factorization.

247007487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82335832.

The product of its (nonzero) digits is 87808, while the sum is 39.

The square root of 247007487 is about 15716.4718368977. The cubic root of 247007487 is about 627.4368751810.

The spelling of 247007487 in words is "two hundred forty-seven million, seven thousand, four hundred eighty-seven".