3652891 has 4 divisors (see below), whose sum is σ = 3984984. Its totient is φ = 3320800.

The previous prime is 3652889. The next prime is 3652897. The reversal of 3652891 is 1982563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1982563 = 11 ⋅180233.

It is a cyclic number.

It is not a de Polignac number, because 3652891 - 2¹ = 3652889 is a prime.

It is a super-2 number, since 2×3652891² = 26687225315762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3652897) 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, 166030 + ... + 166051.

It is an arithmetic number, because the mean of its divisors is an integer number (996246).

Almost surely, 2^3652891 is an apocalyptic number.

3652891 is a deficient number, since it is larger than the sum of its proper divisors (332093).

3652891 is a wasteful number, since it uses less digits than its factorization.

3652891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332092.

The product of its digits is 12960, while the sum is 34.

The square root of 3652891 is about 1911.2537769747. The cubic root of 3652891 is about 154.0088121117.

The spelling of 3652891 in words is "three million, six hundred fifty-two thousand, eight hundred ninety-one".