768464281 has 4 divisors (see below), whose sum is σ = 827576932. Its totient is φ = 709351632.

The previous prime is 768464269. The next prime is 768464303. The reversal of 768464281 is 182464867.

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

It can be written as a sum of positive squares in 2 ways, for example, as 87254281 + 681210000 = 9341^2 + 26100^2 .

It is a cyclic number.

It is not a de Polignac number, because 768464281 - 2²⁵ = 734909849 is a prime.

It is a super-2 number, since 2×768464281² = 1181074702345693922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (768464251) 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, 29556306 + ... + 29556331.

It is an arithmetic number, because the mean of its divisors is an integer number (206894233).

Almost surely, 2^768464281 is an apocalyptic number.

It is an amenable number.

768464281 is a deficient number, since it is larger than the sum of its proper divisors (59112651).

768464281 is a wasteful number, since it uses less digits than its factorization.

768464281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59112650.

The product of its digits is 516096, while the sum is 46.

The square root of 768464281 is about 27721.1883042556. The cubic root of 768464281 is about 915.9558947414.

The spelling of 768464281 in words is "seven hundred sixty-eight million, four hundred sixty-four thousand, two hundred eighty-one".