766801564 has 6 divisors (see below), whose sum is σ = 1341902744. Its totient is φ = 383400780.

The previous prime is 766801561. The next prime is 766801591. The reversal of 766801564 is 465108667.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 766801564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766801561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95850192 + ... + 95850199.

Almost surely, 2^766801564 is an apocalyptic number.

It is an amenable number.

766801564 is a deficient number, since it is larger than the sum of its proper divisors (575101180).

766801564 is a wasteful number, since it uses less digits than its factorization.

766801564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191700395 (or 191700393 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 766801564 is about 27691.1820621656. The cubic root of 766801564 is about 915.2948034316.

The spelling of 766801564 in words is "seven hundred sixty-six million, eight hundred one thousand, five hundred sixty-four".