766775677 has 4 divisors (see below), whose sum is σ = 771059520. Its totient is φ = 762491836.

The previous prime is 766775641. The next prime is 766775717. The reversal of 766775677 is 776577667.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 776577667 = 103 ⋅7539589.

It is a cyclic number.

It is not a de Polignac number, because 766775677 - 2¹¹ = 766773629 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 (766775627) 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, 2141653 + ... + 2142010.

It is an arithmetic number, because the mean of its divisors is an integer number (192764880).

Almost surely, 2^766775677 is an apocalyptic number.

It is an amenable number.

766775677 is a deficient number, since it is larger than the sum of its proper divisors (4283843).

766775677 is a wasteful number, since it uses less digits than its factorization.

766775677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283842.

The product of its digits is 18151560, while the sum is 58.

The square root of 766775677 is about 27690.7146350541. The cubic root of 766775677 is about 915.2845032860.

The spelling of 766775677 in words is "seven hundred sixty-six million, seven hundred seventy-five thousand, six hundred seventy-seven".