766538773 has 16 divisors (see below), whose sum is σ = 1029200256. Its totient is φ = 551355840.

The previous prime is 766538741. The next prime is 766538803. The reversal of 766538773 is 377835667.

It is a happy number.

It is not a de Polignac number, because 766538773 - 2⁵ = 766538741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 766538773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766538573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381886 + ... + 383887.

It is an arithmetic number, because the mean of its divisors is an integer number (64325016).

Almost surely, 2^766538773 is an apocalyptic number.

It is an amenable number.

766538773 is a deficient number, since it is larger than the sum of its proper divisors (262661483).

766538773 is a wasteful number, since it uses less digits than its factorization.

766538773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765804.

The product of its digits is 4445280, while the sum is 52.

The square root of 766538773 is about 27686.4366251780. The cubic root of 766538773 is about 915.1902310838.

The spelling of 766538773 in words is "seven hundred sixty-six million, five hundred thirty-eight thousand, seven hundred seventy-three".