13077857 has 4 divisors (see below), whose sum is σ = 14083860. Its totient is φ = 12071856.

The previous prime is 13077847. The next prime is 13077859. The reversal of 13077857 is 75877031.

13077857 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2062096 + 11015761 = 1436^2 + 3319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13077857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13077857.

It is not an unprimeable number, because it can be changed into a prime (13077859) 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, 502982 + ... + 503007.

It is an arithmetic number, because the mean of its divisors is an integer number (3520965).

Almost surely, 2^13077857 is an apocalyptic number.

It is an amenable number.

13077857 is a deficient number, since it is larger than the sum of its proper divisors (1006003).

13077857 is a wasteful number, since it uses less digits than its factorization.

13077857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006002.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 13077857 is about 3616.3319814420. The cubic root of 13077857 is about 235.6019395707.

The spelling of 13077857 in words is "thirteen million, seventy-seven thousand, eight hundred fifty-seven".