77680010 has 8 divisors (see below), whose sum is σ = 139824036. Its totient is φ = 31072000.

The previous prime is 77680003. The next prime is 77680051. The reversal of 77680010 is 1008677.

It can be written as a sum of positive squares in 2 ways, for example, as 72914521 + 4765489 = 8539^2 + 2183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 3883991 + ... + 3884010.

Almost surely, 2^77680010 is an apocalyptic number.

77680010 is a deficient number, since it is larger than the sum of its proper divisors (62144026).

77680010 is a wasteful number, since it uses less digits than its factorization.

77680010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7768008.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 77680010 is about 8813.6263819157. The cubic root of 77680010 is about 426.6807904125.

Adding to 77680010 its reverse (1008677), we get a palindrome (78688687).

The spelling of 77680010 in words is "seventy-seven million, six hundred eighty thousand, ten".