3628739 has 4 divisors (see below), whose sum is σ = 3679920. Its totient is φ = 3577560.

The previous prime is 3628711. The next prime is 3628747. The reversal of 3628739 is 9378263.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9378263 = 449 ⋅20887.

It is a cyclic number.

It is not a de Polignac number, because 3628739 - 2⁸ = 3628483 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3628759) 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, 25484 + ... + 25625.

It is an arithmetic number, because the mean of its divisors is an integer number (919980).

Almost surely, 2^3628739 is an apocalyptic number.

3628739 is a deficient number, since it is larger than the sum of its proper divisors (51181).

3628739 is an equidigital number, since it uses as much as digits as its factorization.

3628739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51180.

The product of its digits is 54432, while the sum is 38.

The square root of 3628739 is about 1904.9249329042. The cubic root of 3628739 is about 153.6686387341.

The spelling of 3628739 in words is "three million, six hundred twenty-eight thousand, seven hundred thirty-nine".