3669905 has 4 divisors (see below), whose sum is σ = 4403892. Its totient is φ = 2935920.

The previous prime is 3669899. The next prime is 3669931. The reversal of 3669905 is 5099663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5099663 = 457 ⋅11159.

It can be written as a sum of positive squares in 2 ways, for example, as 1106704 + 2563201 = 1052^2 + 1601^2 .

It is not a de Polignac number, because 3669905 - 2⁴ = 3669889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366986 + ... + 366995.

It is an arithmetic number, because the mean of its divisors is an integer number (1100973).

Almost surely, 2^3669905 is an apocalyptic number.

It is an amenable number.

3669905 is a deficient number, since it is larger than the sum of its proper divisors (733987).

3669905 is an equidigital number, since it uses as much as digits as its factorization.

3669905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733986.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 3669905 is about 1915.6996111082. The cubic root of 3669905 is about 154.2475497983.

The spelling of 3669905 in words is "three million, six hundred sixty-nine thousand, nine hundred five".