3655878 has 8 divisors (see below), whose sum is σ = 7311768. Its totient is φ = 1218624.

The previous prime is 3655877. The next prime is 3655879. The reversal of 3655878 is 8785563.

It is an interprime number because it is at equal distance from previous prime (3655877) and next prime (3655879).

It is a sphenic number, since it is the product of 3 distinct primes.

3655878 is an admirable number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3655877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304651 + ... + 304662.

It is an arithmetic number, because the mean of its divisors is an integer number (913971).

Almost surely, 2^3655878 is an apocalyptic number.

3655878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3655878 is a wasteful number, since it uses less digits than its factorization.

3655878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609318.

The product of its digits is 201600, while the sum is 42.

The square root of 3655878 is about 1912.0350415199. The cubic root of 3655878 is about 154.0507787796.

The spelling of 3655878 in words is "three million, six hundred fifty-five thousand, eight hundred seventy-eight".