766217413 has 4 divisors (see below), whose sum is σ = 825157228. Its totient is φ = 707277600.

The previous prime is 766217407. The next prime is 766217429. The reversal of 766217413 is 314712667.

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 293676769 + 472540644 = 17137^2 + 21738^2 .

It is a cyclic number.

It is not a de Polignac number, because 766217413 - 2⁹ = 766216901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766217443) 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, 29469888 + ... + 29469913.

It is an arithmetic number, because the mean of its divisors is an integer number (206289307).

Almost surely, 2^766217413 is an apocalyptic number.

It is an amenable number.

766217413 is a deficient number, since it is larger than the sum of its proper divisors (58939815).

766217413 is a wasteful number, since it uses less digits than its factorization.

766217413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58939814.

The product of its digits is 42336, while the sum is 37.

The square root of 766217413 is about 27680.6324530347. The cubic root of 766217413 is about 915.0623199016.

The spelling of 766217413 in words is "seven hundred sixty-six million, two hundred seventeen thousand, four hundred thirteen".