3648578623 has 4 divisors (see below), whose sum is σ = 3648830328. Its totient is φ = 3648326920.

The previous prime is 3648578603. The next prime is 3648578627. The reversal of 3648578623 is 3268758463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3268758463 = 15629 ⋅209147.

It is a cyclic number.

It is not a de Polignac number, because 3648578623 - 2⁹ = 3648578111 is a prime.

It is a super-2 number, since 2×3648578623² = 26624251936425152258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3648578627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102688 + ... + 133573.

It is an arithmetic number, because the mean of its divisors is an integer number (912207582).

Almost surely, 2^3648578623 is an apocalyptic number.

3648578623 is a deficient number, since it is larger than the sum of its proper divisors (251705).

3648578623 is a wasteful number, since it uses less digits than its factorization.

3648578623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251704.

The product of its digits is 5806080, while the sum is 52.

The square root of 3648578623 is about 60403.4653227776. The cubic root of 3648578623 is about 1539.4818382397.

The spelling of 3648578623 in words is "three billion, six hundred forty-eight million, five hundred seventy-eight thousand, six hundred twenty-three".