77664334 has 12 divisors (see below), whose sum is σ = 128050272. Its totient is φ = 35301860.

The previous prime is 77664329. The next prime is 77664361. The reversal of 77664334 is 43346677.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 160222 + ... + 160705.

It is an arithmetic number, because the mean of its divisors is an integer number (10670856).

Almost surely, 2^77664334 is an apocalyptic number.

77664334 is a deficient number, since it is larger than the sum of its proper divisors (50385938).

77664334 is a wasteful number, since it uses less digits than its factorization.

77664334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320951 (or 320940 counting only the distinct ones).

The product of its digits is 254016, while the sum is 40.

The square root of 77664334 is about 8812.7370322732. The cubic root of 77664334 is about 426.6520867685.

It can be divided in two parts, 776643 and 34, that added together give a palindrome (776677).

The spelling of 77664334 in words is "seventy-seven million, six hundred sixty-four thousand, three hundred thirty-four".