872681513 has 4 divisors (see below), whose sum is σ = 952016208. Its totient is φ = 793346820.

The previous prime is 872681503. The next prime is 872681561. The reversal of 872681513 is 315186278.

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 872681513 - 2⁴ = 872681497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (872681503) 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, 39667331 + ... + 39667352.

It is an arithmetic number, because the mean of its divisors is an integer number (238004052).

Almost surely, 2^872681513 is an apocalyptic number.

It is an amenable number.

872681513 is a deficient number, since it is larger than the sum of its proper divisors (79334695).

872681513 is a wasteful number, since it uses less digits than its factorization.

872681513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79334694.

The product of its digits is 80640, while the sum is 41.

The square root of 872681513 is about 29541.1833378421. The cubic root of 872681513 is about 955.6200620360.

The spelling of 872681513 in words is "eight hundred seventy-two million, six hundred eighty-one thousand, five hundred thirteen".