771670013 has 4 divisors (see below), whose sum is σ = 771727968. Its totient is φ = 771612060.

The previous prime is 771669989. The next prime is 771670043. The reversal of 771670013 is 310076177.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 771670013 - 2¹⁸ = 771407869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (771670043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2120 + ... + 39342.

It is an arithmetic number, because the mean of its divisors is an integer number (192931992).

Almost surely, 2^771670013 is an apocalyptic number.

It is an amenable number.

771670013 is a deficient number, since it is larger than the sum of its proper divisors (57955).

771670013 is a wasteful number, since it uses less digits than its factorization.

771670013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57954.

The product of its (nonzero) digits is 6174, while the sum is 32.

The square root of 771670013 is about 27778.9490981930. The cubic root of 771670013 is about 917.2277974993.

The spelling of 771670013 in words is "seven hundred seventy-one million, six hundred seventy thousand, thirteen".