6429865 has 16 divisors (see below), whose sum is σ = 8580096. Its totient is φ = 4593600.

The previous prime is 6429799. The next prime is 6429869. The reversal of 6429865 is 5689246.

It is a happy number.

It is not a de Polignac number, because 6429865 - 2¹⁷ = 6298793 is a prime.

It is a Duffinian number.

Its product of digits (103680) is a multiple of the sum of its prime divisors (3240).

It is not an unprimeable number, because it can be changed into a prime (6429869) 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, 420 + ... + 3610.

It is an arithmetic number, because the mean of its divisors is an integer number (536256).

Almost surely, 2^6429865 is an apocalyptic number.

6429865 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6429865 is a deficient number, since it is larger than the sum of its proper divisors (2150231).

6429865 is a wasteful number, since it uses less digits than its factorization.

6429865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240.

The product of its digits is 103680, while the sum is 40.

The square root of 6429865 is about 2535.7178470800. The cubic root of 6429865 is about 185.9518991509.

It can be divided in two parts, 64 and 29865, that added together give a square (29929 = 173²).

The spelling of 6429865 in words is "six million, four hundred twenty-nine thousand, eight hundred sixty-five".