3478663 has 2 divisors, whose sum is σ = 3478664. Its totient is φ = 3478662.

The previous prime is 3478661. The next prime is 3478667. The reversal of 3478663 is 3668743.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3478663 - 2¹ = 3478661 is a prime.

Together with 3478661, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 3 + 4⁵ + 7⁶ + 8³ + 6⁸ + 6⁸ + 3⁵ .

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3478661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1739331 + 1739332.

It is an arithmetic number, because the mean of its divisors is an integer number (1739332).

Almost surely, 2^3478663 is an apocalyptic number.

3478663 is a deficient number, since it is larger than the sum of its proper divisors (1).

3478663 is an equidigital number, since it uses as much as digits as its factorization.

3478663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 37.

The square root of 3478663 is about 1865.1174225769. The cubic root of 3478663 is about 151.5202875960.

The spelling of 3478663 in words is "three million, four hundred seventy-eight thousand, six hundred sixty-three".