771777013 has 4 divisors (see below), whose sum is σ = 882030880. Its totient is φ = 661523148.

The previous prime is 771777011. The next prime is 771777079. The reversal of 771777013 is 310777177.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 771777013 - 2¹ = 771777011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (771777011) 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, 55126923 + ... + 55126936.

It is an arithmetic number, because the mean of its divisors is an integer number (220507720).

Almost surely, 2^771777013 is an apocalyptic number.

It is an amenable number.

771777013 is a deficient number, since it is larger than the sum of its proper divisors (110253867).

771777013 is a wasteful number, since it uses less digits than its factorization.

771777013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110253866.

The product of its (nonzero) digits is 50421, while the sum is 40.

The square root of 771777013 is about 27780.8749502243. The cubic root of 771777013 is about 917.2701899023.

The spelling of 771777013 in words is "seven hundred seventy-one million, seven hundred seventy-seven thousand, thirteen".