3648478 has 4 divisors (see below), whose sum is σ = 5472720. Its totient is φ = 1824238.

The previous prime is 3648451. The next prime is 3648479. The reversal of 3648478 is 8748463.

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

It is a super-2 number, since 2×3648478² = 26622783432968, which contains 22 as substring.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 3648478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3648479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 912118 + ... + 912121.

It is an arithmetic number, because the mean of its divisors is an integer number (1368180).

Almost surely, 2^3648478 is an apocalyptic number.

3648478 is a deficient number, since it is larger than the sum of its proper divisors (1824242).

3648478 is a wasteful number, since it uses less digits than its factorization.

3648478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824241.

The product of its digits is 129024, while the sum is 40.

The square root of 3648478 is about 1910.0989503164. The cubic root of 3648478 is about 153.9467685815.

The spelling of 3648478 in words is "three million, six hundred forty-eight thousand, four hundred seventy-eight".