777220130 has 8 divisors (see below), whose sum is σ = 1398996252. Its totient is φ = 310888048.

The previous prime is 777220121. The next prime is 777220133. The reversal of 777220130 is 31022777.

It can be written as a sum of positive squares in 2 ways, for example, as 679071481 + 98148649 = 26059^2 + 9907^2 .

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

It is a super-2 number, since 2×777220130² = 1208142260954433800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 777220093 and 777220102.

It is not an unprimeable number, because it can be changed into a prime (777220133) 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 3 ways as a sum of consecutive naturals, for example, 38860997 + ... + 38861016.

Almost surely, 2^777220130 is an apocalyptic number.

777220130 is a deficient number, since it is larger than the sum of its proper divisors (621776122).

777220130 is a wasteful number, since it uses less digits than its factorization.

777220130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77722020.

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 777220130 is about 27878.6680097884. The cubic root of 777220130 is about 919.4215527308.

The spelling of 777220130 in words is "seven hundred seventy-seven million, two hundred twenty thousand, one hundred thirty".