3668267640 has 32 divisors (see below), whose sum is σ = 11004803280. Its totient is φ = 978204672.

The previous prime is 3668267627. The next prime is 3668267683. The reversal of 3668267640 is 467628663.

3668267640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3668267640.

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, 15284329 + ... + 15284568.

Almost surely, 2^3668267640 is an apocalyptic number.

3668267640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3668267640 is an abundant number, since it is smaller than the sum of its proper divisors (7336535640).

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

3668267640 is a wasteful number, since it uses less digits than its factorization.

3668267640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30568911 (or 30568907 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 48.

The square root of 3668267640 is about 60566.2252414661. The cubic root of 3668267640 is about 1542.2460675778.

The spelling of 3668267640 in words is "three billion, six hundred sixty-eight million, two hundred sixty-seven thousand, six hundred forty".