77161010 has 16 divisors (see below), whose sum is σ = 139086936. Its totient is φ = 30820608.

The previous prime is 77161001. The next prime is 77161031. The reversal of 77161010 is 1016177.

It can be written as a sum of positive squares in 4 ways, for example, as 70744921 + 6416089 = 8411^2 + 2533^2 .

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 7 ways as a sum of consecutive naturals, for example, 2474 + ... + 12666.

Almost surely, 2^77161010 is an apocalyptic number.

77161010 is a deficient number, since it is larger than the sum of its proper divisors (61925926).

77161010 is a wasteful number, since it uses less digits than its factorization.

77161010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10957.

The product of its (nonzero) digits is 294, while the sum is 23.

The square root of 77161010 is about 8784.1339926028. The cubic root of 77161010 is about 425.7284117542.

Adding to 77161010 its reverse (1016177), we get a palindrome (78177187).

The spelling of 77161010 in words is "seventy-seven million, one hundred sixty-one thousand, ten".