3664733640 has 32 divisors (see below), whose sum is σ = 10994201280. Its totient is φ = 977262272.

The previous prime is 3664733593. The next prime is 3664733641. The reversal of 3664733640 is 463374663.

It is a junction number, because it is equal to n+sod(n) for n = 3664733592 and 3664733601.

It is not an unprimeable number, because it can be changed into a prime (3664733641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15269604 + ... + 15269843.

It is an arithmetic number, because the mean of its divisors is an integer number (343568790).

Almost surely, 2^3664733640 is an apocalyptic number.

3664733640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3664733640 is an abundant number, since it is smaller than the sum of its proper divisors (7329467640).

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

3664733640 is a wasteful number, since it uses less digits than its factorization.

3664733640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30539461 (or 30539457 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 42.

The square root of 3664733640 is about 60537.0435353429. The cubic root of 3664733640 is about 1541.7506430938.

The spelling of 3664733640 in words is "three billion, six hundred sixty-four million, seven hundred thirty-three thousand, six hundred forty".