3656464642 has 8 divisors (see below), whose sum is σ = 5561946432. Its totient is φ = 1802482500.

The previous prime is 3656464621. The next prime is 3656464649. The reversal of 3656464642 is 2464646563.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 3656464592 and 3656464601.

It is not an unprimeable number, because it can be changed into a prime (3656464649) 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, 12874734 + ... + 12875017.

It is an arithmetic number, because the mean of its divisors is an integer number (695243304).

Almost surely, 2^3656464642 is an apocalyptic number.

3656464642 is a deficient number, since it is larger than the sum of its proper divisors (1905481790).

3656464642 is a wasteful number, since it uses less digits than its factorization.

3656464642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25749824.

The product of its digits is 2488320, while the sum is 46.

The square root of 3656464642 is about 60468.7079570913. The cubic root of 3656464642 is about 1540.5901827986.

The spelling of 3656464642 in words is "three billion, six hundred fifty-six million, four hundred sixty-four thousand, six hundred forty-two".