766690101 has 12 divisors (see below), whose sum is σ = 1108630380. Its totient is φ = 510577920.

The previous prime is 766690069. The next prime is 766690159. The reversal of 766690101 is 101096667.

It can be written as a sum of positive squares in 2 ways, for example, as 645668100 + 121022001 = 25410^2 + 11001^2 .

It is not a de Polignac number, because 766690101 - 2⁵ = 766690069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766290101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36796 + ... + 53733.

It is an arithmetic number, because the mean of its divisors is an integer number (92385865).

Almost surely, 2^766690101 is an apocalyptic number.

It is an amenable number.

766690101 is a deficient number, since it is larger than the sum of its proper divisors (341940279).

766690101 is a wasteful number, since it uses less digits than its factorization.

766690101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91476 (or 91473 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 766690101 is about 27689.1693808247. The cubic root of 766690101 is about 915.2504519100.

The spelling of 766690101 in words is "seven hundred sixty-six million, six hundred ninety thousand, one hundred one".