766634445 has 24 divisors (see below), whose sum is σ = 1329868800. Its totient is φ = 408553056.

The previous prime is 766634443. The next prime is 766634447. The reversal of 766634445 is 544436667.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (766634443) and next prime (766634447).

It is not a de Polignac number, because 766634445 - 2¹ = 766634443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 766634445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766634443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58836 + ... + 70674.

It is an arithmetic number, because the mean of its divisors is an integer number (55411200).

Almost surely, 2^766634445 is an apocalyptic number.

It is an amenable number.

766634445 is a deficient number, since it is larger than the sum of its proper divisors (563234355).

766634445 is a wasteful number, since it uses less digits than its factorization.

766634445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13289 (or 13286 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The square root of 766634445 is about 27688.1643486888. The cubic root of 766634445 is about 915.2283045818.

The spelling of 766634445 in words is "seven hundred sixty-six million, six hundred thirty-four thousand, four hundred forty-five".