3478665 has 16 divisors (see below), whose sum is σ = 5746176. Its totient is φ = 1795200.

The previous prime is 3478663. The next prime is 3478667. The reversal of 3478665 is 5668743.

It is an interprime number because it is at equal distance from previous prime (3478663) and next prime (3478667).

It is not a de Polignac number, because 3478665 - 2¹ = 3478663 is a prime.

It is a super-2 number, since 2×3478665² = 24202220364450, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3⁵ + 4⁵ + 7⁶ + 8³ + 6⁸ + 6⁸ + 5 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3478661) 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, 3276 + ... + 4205.

It is an arithmetic number, because the mean of its divisors is an integer number (359136).

Almost surely, 2^3478665 is an apocalyptic number.

It is an amenable number.

3478665 is a deficient number, since it is larger than the sum of its proper divisors (2267511).

3478665 is a wasteful number, since it uses less digits than its factorization.

3478665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7520.

The product of its digits is 120960, while the sum is 39.

The square root of 3478665 is about 1865.1179587361. The cubic root of 3478665 is about 151.5203166340.

The spelling of 3478665 in words is "three million, four hundred seventy-eight thousand, six hundred sixty-five".