6862985729 has 4 divisors (see below), whose sum is σ = 6865436976. Its totient is φ = 6860534484.

The previous prime is 6862985699. The next prime is 6862985761. The reversal of 6862985729 is 9275892686.

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 6862985729 - 2¹² = 6862981633 is a prime.

It is a super-2 number, since 2×6862985729² = 94201146232915322882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6862985329) 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, 1221419 + ... + 1227024.

It is an arithmetic number, because the mean of its divisors is an integer number (1716359244).

Almost surely, 2^6862985729 is an apocalyptic number.

It is an amenable number.

6862985729 is a deficient number, since it is larger than the sum of its proper divisors (2451247).

6862985729 is a wasteful number, since it uses less digits than its factorization.

6862985729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451246.

The product of its digits is 26127360, while the sum is 62.

The square root of 6862985729 is about 82843.1392995220. The cubic root of 6862985729 is about 1900.3679554220.

The spelling of 6862985729 in words is "six billion, eight hundred sixty-two million, nine hundred eighty-five thousand, seven hundred twenty-nine".