3661350644 has 12 divisors (see below), whose sum is σ = 7322701344. Its totient is φ = 1569150264.

The previous prime is 3661350613. The next prime is 3661350647. The reversal of 3661350644 is 4460531663.

3661350644 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3661350598 and 3661350607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661350647) 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, 65381234 + ... + 65381289.

It is an arithmetic number, because the mean of its divisors is an integer number (610225112).

Almost surely, 2^3661350644 is an apocalyptic number.

It is an amenable number.

3661350644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3661350644 is a wasteful number, since it uses less digits than its factorization.

3661350644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130762534 (or 130762532 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 3661350644 is about 60509.0955476943. The cubic root of 3661350644 is about 1541.2760890957.

The spelling of 3661350644 in words is "three billion, six hundred sixty-one million, three hundred fifty thousand, six hundred forty-four".