3945660 has 24 divisors (see below), whose sum is σ = 11048016. Its totient is φ = 1052160.

The previous prime is 3945659. The next prime is 3945661. The reversal of 3945660 is 665493.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3945659) and next prime (3945661).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945661) 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, 32821 + ... + 32940.

It is an arithmetic number, because the mean of its divisors is an integer number (460334).

Almost surely, 2^3945660 is an apocalyptic number.

3945660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3945660 is an abundant number, since it is smaller than the sum of its proper divisors (7102356).

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

3945660 is a wasteful number, since it uses less digits than its factorization.

3945660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65773 (or 65771 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 3945660 is about 1986.3685458645. The cubic root of 3945660 is about 158.0179972022.

The spelling of 3945660 in words is "three million, nine hundred forty-five thousand, six hundred sixty".