766921730 has 16 divisors (see below), whose sum is σ = 1397934720. Its totient is φ = 302885232.

The previous prime is 766921717. The next prime is 766921739. The reversal of 766921730 is 37129667.

It is not an unprimeable number, because it can be changed into a prime (766921739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484604 + ... + 486183.

It is an arithmetic number, because the mean of its divisors is an integer number (87370920).

Almost surely, 2^766921730 is an apocalyptic number.

766921730 is a deficient number, since it is larger than the sum of its proper divisors (631012990).

766921730 is a wasteful number, since it uses less digits than its factorization.

766921730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970873.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 766921730 is about 27693.3517292508. The cubic root of 766921730 is about 915.3426130934.

The spelling of 766921730 in words is "seven hundred sixty-six million, nine hundred twenty-one thousand, seven hundred thirty".