771320013 has 16 divisors (see below), whose sum is σ = 1055528640. Its totient is φ = 500835456.

The previous prime is 771319999. The next prime is 771320027. The reversal of 771320013 is 310023177.

It is an interprime number because it is at equal distance from previous prime (771319999) and next prime (771320027).

It is not a de Polignac number, because 771320013 - 2¹⁴ = 771303629 is a prime.

It is a super-3 number, since 3×771320013³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (771320813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3670 + ... + 39447.

It is an arithmetic number, because the mean of its divisors is an integer number (65970540).

Almost surely, 2^771320013 is an apocalyptic number.

It is an amenable number.

771320013 is a deficient number, since it is larger than the sum of its proper divisors (284208627).

771320013 is a wasteful number, since it uses less digits than its factorization.

771320013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43276.

The product of its (nonzero) digits is 882, while the sum is 24.

The square root of 771320013 is about 27772.6486493456. The cubic root of 771320013 is about 917.0891033807.

The spelling of 771320013 in words is "seven hundred seventy-one million, three hundred twenty thousand, thirteen".