247087087 has 4 divisors (see below), whose sum is σ = 266093800. Its totient is φ = 228080376.

The previous prime is 247087069. The next prime is 247087097. The reversal of 247087087 is 780780742.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247087087 is a prime.

It is a super-2 number, since 2×247087087² = 122104057124291138, 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 (247087067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9503337 + ... + 9503362.

It is an arithmetic number, because the mean of its divisors is an integer number (66523450).

Almost surely, 2^247087087 is an apocalyptic number.

247087087 is a deficient number, since it is larger than the sum of its proper divisors (19006713).

247087087 is a wasteful number, since it uses less digits than its factorization.

247087087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19006712.

The product of its (nonzero) digits is 175616, while the sum is 43.

The square root of 247087087 is about 15719.0040078880. The cubic root of 247087087 is about 627.5042666758.

The spelling of 247087087 in words is "two hundred forty-seven million, eighty-seven thousand, eighty-seven".