68765404487 has 4 divisors (see below), whose sum is σ = 74055051000. Its totient is φ = 63475757976.

The previous prime is 68765404457. The next prime is 68765404517. The reversal of 68765404487 is 78440456786.

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

It is an interprime number because it is at equal distance from previous prime (68765404457) and next prime (68765404517).

It is a cyclic number.

It is not a de Polignac number, because 68765404487 - 2⁶ = 68765404423 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 (68765404427) 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, 2644823237 + ... + 2644823262.

It is an arithmetic number, because the mean of its divisors is an integer number (18513762750).

Almost surely, 2^68765404487 is an apocalyptic number.

68765404487 is a deficient number, since it is larger than the sum of its proper divisors (5289646513).

68765404487 is a wasteful number, since it uses less digits than its factorization.

68765404487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289646512.

The product of its (nonzero) digits is 36126720, while the sum is 59.

The spelling of 68765404487 in words is "sixty-eight billion, seven hundred sixty-five million, four hundred four thousand, four hundred eighty-seven".