4063658644 has 24 divisors (see below), whose sum is σ = 7375942728. Its totient is φ = 1957334400.

The previous prime is 4063658639. The next prime is 4063658671. The reversal of 4063658644 is 4468563604.

It can be written as a sum of positive squares in 4 ways, for example, as 1298160900 + 2765497744 = 36030^2 + 52588^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4063658594 and 4063658603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120979 + ... + 150874.

It is an arithmetic number, because the mean of its divisors is an integer number (307330947).

Almost surely, 2^4063658644 is an apocalyptic number.

It is an amenable number.

4063658644 is a deficient number, since it is larger than the sum of its proper divisors (3312284084).

4063658644 is a wasteful number, since it uses less digits than its factorization.

4063658644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271995 (or 271993 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 46.

The square root of 4063658644 is about 63746.8324232663. The cubic root of 4063658644 is about 1595.7777536358. Note that the first 4 decimals are identical.

The spelling of 4063658644 in words is "four billion, sixty-three million, six hundred fifty-eight thousand, six hundred forty-four".