290668788487 has 16 divisors (see below), whose sum is σ = 366979507200. Its totient is φ = 223628127840.

The previous prime is 290668788467. The next prime is 290668788503. The reversal of 290668788487 is 784887866092.

It is a cyclic number.

It is not a de Polignac number, because 290668788487 - 2¹⁵ = 290668755719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290668788467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23885812 + ... + 23897977.

It is an arithmetic number, because the mean of its divisors is an integer number (22936219200).

Almost surely, 2^290668788487 is an apocalyptic number.

290668788487 is a deficient number, since it is larger than the sum of its proper divisors (76310718713).

290668788487 is a wasteful number, since it uses less digits than its factorization.

290668788487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47783886.

The product of its (nonzero) digits is 520224768, while the sum is 73.

The spelling of 290668788487 in words is "two hundred ninety billion, six hundred sixty-eight million, seven hundred eighty-eight thousand, four hundred eighty-seven".