766726540 has 24 divisors (see below), whose sum is σ = 1610920080. Its totient is φ = 306539328.

The previous prime is 766726529. The next prime is 766726547. The reversal of 766726540 is 45627667.

766726540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (766726547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37879 + ... + 54481.

It is an arithmetic number, because the mean of its divisors is an integer number (67121670).

Almost surely, 2^766726540 is an apocalyptic number.

It is an amenable number.

766726540 is an abundant number, since it is smaller than the sum of its proper divisors (844193540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

766726540 is a wasteful number, since it uses less digits than its factorization.

766726540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18921 (or 18919 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 766726540 is about 27689.8273739653. The cubic root of 766726540 is about 915.2649515898.

The spelling of 766726540 in words is "seven hundred sixty-six million, seven hundred twenty-six thousand, five hundred forty".