3955620 has 24 divisors (see below), whose sum is σ = 11075904. Its totient is φ = 1054816.

The previous prime is 3955603. The next prime is 3955621. The reversal of 3955620 is 265593.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3955621) 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, 32904 + ... + 33023.

It is an arithmetic number, because the mean of its divisors is an integer number (461496).

Almost surely, 2^3955620 is an apocalyptic number.

3955620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3955620 is an abundant number, since it is smaller than the sum of its proper divisors (7120284).

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

3955620 is a wasteful number, since it uses less digits than its factorization.

3955620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65939 (or 65937 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 3955620 is about 1988.8740533277. The cubic root of 3955620 is about 158.1508466969.

The spelling of 3955620 in words is "three million, nine hundred fifty-five thousand, six hundred twenty".