3736663640 has 16 divisors (see below), whose sum is σ = 8407493280. Its totient is φ = 1494665440.

The previous prime is 3736663627. The next prime is 3736663643. The reversal of 3736663640 is 463666373.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3736663591 and 3736663600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3736663643) 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, 46708256 + ... + 46708335.

It is an arithmetic number, because the mean of its divisors is an integer number (525468330).

Almost surely, 2^3736663640 is an apocalyptic number.

It is an amenable number.

3736663640 is an abundant number, since it is smaller than the sum of its proper divisors (4670829640).

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

3736663640 is a wasteful number, since it uses less digits than its factorization.

3736663640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93416602 (or 93416598 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 44.

The square root of 3736663640 is about 61128.2556597193. The cubic root of 3736663640 is about 1551.7723244066.

The spelling of 3736663640 in words is "three billion, seven hundred thirty-six million, six hundred sixty-three thousand, six hundred forty".