766663743 has 8 divisors (see below), whose sum is σ = 1027515568. Its totient is φ = 508460544.

The previous prime is 766663741. The next prime is 766663769. The reversal of 766663743 is 347366667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 766663743 - 2¹ = 766663741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 766663692 and 766663701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766663741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661480 + ... + 662637.

It is an arithmetic number, because the mean of its divisors is an integer number (128439446).

Almost surely, 2^766663743 is an apocalyptic number.

766663743 is a deficient number, since it is larger than the sum of its proper divisors (260851825).

766663743 is a wasteful number, since it uses less digits than its factorization.

766663743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324313.

The product of its digits is 2286144, while the sum is 48.

The square root of 766663743 is about 27688.6934144607. The cubic root of 766663743 is about 915.2399633402.

The spelling of 766663743 in words is "seven hundred sixty-six million, six hundred sixty-three thousand, seven hundred forty-three".