768505867 has 4 divisors (see below), whose sum is σ = 774372456. Its totient is φ = 762639280.

The previous prime is 768505853. The next prime is 768505889.

768505867 is nontrivially palindromic in base 10.

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-768505867 is a prime.

It is a super-2 number, since 2×768505867² = 1181202535226843378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (768505807) 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, 2933098 + ... + 2933359.

It is an arithmetic number, because the mean of its divisors is an integer number (193593114).

Almost surely, 2^768505867 is an apocalyptic number.

768505867 is a deficient number, since it is larger than the sum of its proper divisors (5866589).

768505867 is a wasteful number, since it uses less digits than its factorization.

768505867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5866588.

The product of its (nonzero) digits is 2822400, while the sum is 52.

The square root of 768505867 is about 27721.9383701790. The cubic root of 768505867 is about 915.9724169818.

The spelling of 768505867 in words is "seven hundred sixty-eight million, five hundred five thousand, eight hundred sixty-seven".