768381487 has 4 divisors (see below), whose sum is σ = 813580416. Its totient is φ = 723182560.

The previous prime is 768381473. The next prime is 768381499. The reversal of 768381487 is 784183867.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784183867 = 29 ⋅27040823.

It is a cyclic number.

It is not a de Polignac number, because 768381487 - 2¹⁵ = 768348719 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 (768381457) 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, 22599439 + ... + 22599472.

It is an arithmetic number, because the mean of its divisors is an integer number (203395104).

Almost surely, 2^768381487 is an apocalyptic number.

768381487 is a deficient number, since it is larger than the sum of its proper divisors (45198929).

768381487 is a wasteful number, since it uses less digits than its factorization.

768381487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45198928.

The product of its digits is 1806336, while the sum is 52.

The square root of 768381487 is about 27719.6949297787. The cubic root of 768381487 is about 915.9229986664.

The spelling of 768381487 in words is "seven hundred sixty-eight million, three hundred eighty-one thousand, four hundred eighty-seven".