7478663 has 4 divisors (see below), whose sum is σ = 7605480. Its totient is φ = 7351848.

The previous prime is 7478651. The next prime is 7478677. The reversal of 7478663 is 3668747.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7478663 - 2⁸ = 7478407 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 7478663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7478633) 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, 63320 + ... + 63437.

It is an arithmetic number, because the mean of its divisors is an integer number (1901370).

Almost surely, 2^7478663 is an apocalyptic number.

7478663 is a deficient number, since it is larger than the sum of its proper divisors (126817).

7478663 is a wasteful number, since it uses less digits than its factorization.

7478663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126816.

The product of its digits is 169344, while the sum is 41.

The square root of 7478663 is about 2734.7144275043. The cubic root of 7478663 is about 195.5575801247.

The spelling of 7478663 in words is "seven million, four hundred seventy-eight thousand, six hundred sixty-three".