3612739 has 4 divisors (see below), whose sum is σ = 3890656. Its totient is φ = 3334824.

The previous prime is 3612737. The next prime is 3612743. The reversal of 3612739 is 9372163.

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 3612739 - 2¹ = 3612737 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 3612739.

It is not an unprimeable number, because it can be changed into a prime (3612737) 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, 138939 + ... + 138964.

It is an arithmetic number, because the mean of its divisors is an integer number (972664).

Almost surely, 2^3612739 is an apocalyptic number.

3612739 is a deficient number, since it is larger than the sum of its proper divisors (277917).

3612739 is a wasteful number, since it uses less digits than its factorization.

3612739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277916.

The product of its digits is 6804, while the sum is 31.

The square root of 3612739 is about 1900.7206528051. The cubic root of 3612739 is about 153.4424517340.

The spelling of 3612739 in words is "three million, six hundred twelve thousand, seven hundred thirty-nine".