4640662642 has 32 divisors (see below), whose sum is σ = 8682347520. Its totient is φ = 1807278480.

The previous prime is 4640662589. The next prime is 4640662673. The reversal of 4640662642 is 2462660464.

It is a junction number, because it is equal to n+sod(n) for n = 4640662595 and 4640662604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469273 + ... + 479059.

It is an arithmetic number, because the mean of its divisors is an integer number (271323360).

Almost surely, 2^4640662642 is an apocalyptic number.

4640662642 is a deficient number, since it is larger than the sum of its proper divisors (4041684878).

4640662642 is a wasteful number, since it uses less digits than its factorization.

4640662642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12886.

The product of its (nonzero) digits is 331776, while the sum is 40.

The square root of 4640662642 is about 68122.4092498203. The cubic root of 4640662642 is about 1667.9895778169.

The spelling of 4640662642 in words is "four billion, six hundred forty million, six hundred sixty-two thousand, six hundred forty-two".