766065729 has 16 divisors (see below), whose sum is σ = 1199991744. Its totient is φ = 428568000.

The previous prime is 766065721. The next prime is 766065767. The reversal of 766065729 is 927560667.

It is not a de Polignac number, because 766065729 - 2³ = 766065721 is a prime.

It is a super-2 number, since 2×766065729² = 1173713402296602882, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (766065721) 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, 892422 + ... + 893279.

It is an arithmetic number, because the mean of its divisors is an integer number (74999484).

Almost surely, 2^766065729 is an apocalyptic number.

It is an amenable number.

766065729 is a deficient number, since it is larger than the sum of its proper divisors (433926015).

766065729 is a wasteful number, since it uses less digits than its factorization.

766065729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785728.

The product of its (nonzero) digits is 952560, while the sum is 48.

The square root of 766065729 is about 27677.8924233765. The cubic root of 766065729 is about 915.0019325708.

The spelling of 766065729 in words is "seven hundred sixty-six million, sixty-five thousand, seven hundred twenty-nine".