3625691 has 4 divisors (see below), whose sum is σ = 3675432. Its totient is φ = 3575952.

The previous prime is 3625681. The next prime is 3625693. The reversal of 3625691 is 1965263.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3625691 - 2¹⁰ = 3624667 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 (3625693) 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, 24761 + ... + 24906.

It is an arithmetic number, because the mean of its divisors is an integer number (918858).

Almost surely, 2^3625691 is an apocalyptic number.

3625691 is a deficient number, since it is larger than the sum of its proper divisors (49741).

3625691 is an equidigital number, since it uses as much as digits as its factorization.

3625691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49740.

The product of its digits is 9720, while the sum is 32.

The square root of 3625691 is about 1904.1247333092. The cubic root of 3625691 is about 153.6256014500.

The spelling of 3625691 in words is "three million, six hundred twenty-five thousand, six hundred ninety-one".