769664419 has 4 divisors (see below), whose sum is σ = 769720896. Its totient is φ = 769607944.

The previous prime is 769664411. The next prime is 769664447. The reversal of 769664419 is 914466967.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 914466967 = 1553 ⋅588839.

It is a cyclic number.

It is not a de Polignac number, because 769664419 - 2³ = 769664411 is a prime.

It is a super-2 number, since 2×769664419² = 1184766635749215122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (769664411) 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, 6222 + ... + 39724.

It is an arithmetic number, because the mean of its divisors is an integer number (192430224).

Almost surely, 2^769664419 is an apocalyptic number.

769664419 is a deficient number, since it is larger than the sum of its proper divisors (56477).

769664419 is a wasteful number, since it uses less digits than its factorization.

769664419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56476.

The product of its digits is 1959552, while the sum is 52.

The square root of 769664419 is about 27742.8264421634. The cubic root of 769664419 is about 916.4324736971.

The spelling of 769664419 in words is "seven hundred sixty-nine million, six hundred sixty-four thousand, four hundred nineteen".