766212481 has 4 divisors (see below), whose sum is σ = 774821700. Its totient is φ = 757603264.

The previous prime is 766212431. The next prime is 766212493. The reversal of 766212481 is 184212667.

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 324540225 + 441672256 = 18015^2 + 21016^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-766212481 is a prime.

It is a super-2 number, since 2×766212481² = 1174163132080350722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 766212481.

It is not an unprimeable number, because it can be changed into a prime (766212401) 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, 4304476 + ... + 4304653.

It is an arithmetic number, because the mean of its divisors is an integer number (193705425).

Almost surely, 2^766212481 is an apocalyptic number.

It is an amenable number.

766212481 is a deficient number, since it is larger than the sum of its proper divisors (8609219).

766212481 is an equidigital number, since it uses as much as digits as its factorization.

766212481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8609218.

The product of its digits is 32256, while the sum is 37.

The square root of 766212481 is about 27680.5433653315. The cubic root of 766212481 is about 915.0603565350.

The spelling of 766212481 in words is "seven hundred sixty-six million, two hundred twelve thousand, four hundred eighty-one".