2709629 has 4 divisors (see below), whose sum is σ = 2918076. Its totient is φ = 2501184.

The previous prime is 2709611. The next prime is 2709643. The reversal of 2709629 is 9269072.

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

It can be written as a sum of positive squares in 2 ways, for example, as 156025 + 2553604 = 395^2 + 1598^2 .

It is a cyclic number.

It is not a de Polignac number, because 2709629 - 2¹⁶ = 2644093 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 (2709659) 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, 104204 + ... + 104229.

It is an arithmetic number, because the mean of its divisors is an integer number (729519).

2^2709629 is an apocalyptic number.

It is an amenable number.

2709629 is a deficient number, since it is larger than the sum of its proper divisors (208447).

2709629 is a wasteful number, since it uses less digits than its factorization.

2709629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208446.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 2709629 is about 1646.0950762334. The cubic root of 2709629 is about 139.4130014283.

The spelling of 2709629 in words is "two million, seven hundred nine thousand, six hundred twenty-nine".