77730650 has 12 divisors (see below), whose sum is σ = 144579102. Its totient is φ = 31092240.

The previous prime is 77730641. The next prime is 77730677. The reversal of 77730650 is 5603777.

It can be written as a sum of positive squares in 3 ways, for example, as 52258441 + 25472209 = 7229^2 + 5047^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77730650.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 777257 + ... + 777356.

Almost surely, 2^77730650 is an apocalyptic number.

77730650 is a deficient number, since it is larger than the sum of its proper divisors (66848452).

77730650 is a wasteful number, since it uses less digits than its factorization.

77730650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554625 (or 1554620 counting only the distinct ones).

The product of its (nonzero) digits is 30870, while the sum is 35.

The square root of 77730650 is about 8816.4987381613. The cubic root of 77730650 is about 426.7734887427.

The spelling of 77730650 in words is "seventy-seven million, seven hundred thirty thousand, six hundred fifty".