769664747 has 2 divisors, whose sum is σ = 769664748. Its totient is φ = 769664746.

The previous prime is 769664741. The next prime is 769664759. The reversal of 769664747 is 747466967.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 769664747 - 2¹⁸ = 769402603 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 769664692 and 769664701.

It is not a weakly prime, because it can be changed into another prime (769664741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384832373 + 384832374.

It is an arithmetic number, because the mean of its divisors is an integer number (384832374).

Almost surely, 2^769664747 is an apocalyptic number.

769664747 is a deficient number, since it is larger than the sum of its proper divisors (1).

769664747 is an equidigital number, since it uses as much as digits as its factorization.

769664747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10668672, while the sum is 56.

The square root of 769664747 is about 27742.8323536008. The cubic root of 769664747 is about 916.4326038792.

The spelling of 769664747 in words is "seven hundred sixty-nine million, six hundred sixty-four thousand, seven hundred forty-seven".