766918453 has 12 divisors (see below), whose sum is σ = 892624332. Its totient is φ = 656994240.

The previous prime is 766918391. The next prime is 766918469. The reversal of 766918453 is 354819667.

It can be written as a sum of positive squares in 2 ways, for example, as 195804049 + 571114404 = 13993^2 + 23898^2 .

It is a de Polignac number, because none of the positive numbers 2^k-766918453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 766918397 and 766918406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766918483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122233 + ... + 128353.

It is an arithmetic number, because the mean of its divisors is an integer number (74385361).

Almost surely, 2^766918453 is an apocalyptic number.

It is an amenable number.

766918453 is a deficient number, since it is larger than the sum of its proper divisors (125705879).

766918453 is a wasteful number, since it uses less digits than its factorization.

766918453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8692 (or 8685 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 766918453 is about 27693.2925633627. The cubic root of 766918453 is about 915.3413093611.

The spelling of 766918453 in words is "seven hundred sixty-six million, nine hundred eighteen thousand, four hundred fifty-three".