3648819 has 4 divisors (see below), whose sum is σ = 4865096. Its totient is φ = 2432544.

The previous prime is 3648797. The next prime is 3648833. The reversal of 3648819 is 9188463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9188463 = 3 ⋅3062821.

It is not a de Polignac number, because 3648819 - 2⁷ = 3648691 is a prime.

It is a super-2 number, since 2×3648819² = 26627760189522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

3648819 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3648859) 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, 608134 + ... + 608139.

It is an arithmetic number, because the mean of its divisors is an integer number (1216274).

Almost surely, 2^3648819 is an apocalyptic number.

3648819 is a deficient number, since it is larger than the sum of its proper divisors (1216277).

3648819 is a wasteful number, since it uses less digits than its factorization.

3648819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216276.

The product of its digits is 41472, while the sum is 39.

The square root of 3648819 is about 1910.1882106222. The cubic root of 3648819 is about 153.9515645734.

The spelling of 3648819 in words is "three million, six hundred forty-eight thousand, eight hundred nineteen".