3655679 has 4 divisors (see below), whose sum is σ = 3659784. Its totient is φ = 3651576.

The previous prime is 3655667. The next prime is 3655681. The reversal of 3655679 is 9765563.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9765563 = 19 ⋅513977.

It is a cyclic number.

It is not a de Polignac number, because 3655679 - 2⁸ = 3655423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3655609) 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, 92 + ... + 2705.

It is an arithmetic number, because the mean of its divisors is an integer number (914946).

Almost surely, 2^3655679 is an apocalyptic number.

3655679 is a deficient number, since it is larger than the sum of its proper divisors (4105).

3655679 is a wasteful number, since it uses less digits than its factorization.

3655679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104.

The product of its digits is 170100, while the sum is 41.

The square root of 3655679 is about 1911.9830020165. The cubic root of 3655679 is about 154.0479835859.

It can be divided in two parts, 3655 and 679, that added together give a palindrome (4334).

The spelling of 3655679 in words is "three million, six hundred fifty-five thousand, six hundred seventy-nine".