2961729 has 6 divisors (see below), whose sum is σ = 4278066. Its totient is φ = 1974480.

The previous prime is 2961727. The next prime is 2961737. The reversal of 2961729 is 9271692.

It can be written as a sum of positive squares in only one way, i.e., 1557504 + 1404225 = 1248^2 + 1185^2 .

It is not a de Polignac number, because 2961729 - 2¹ = 2961727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2961693 and 2961702.

It is not an unprimeable number, because it can be changed into a prime (2961727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164532 + ... + 164549.

It is an arithmetic number, because the mean of its divisors is an integer number (713011).

2^2961729 is an apocalyptic number.

It is an amenable number.

2961729 is a deficient number, since it is larger than the sum of its proper divisors (1316337).

2961729 is a wasteful number, since it uses less digits than its factorization.

2961729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329087 (or 329084 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 2961729 is about 1720.9674604710. The cubic root of 2961729 is about 143.6090378723.

It can be divided in two parts, 29617 and 29, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 2961729 in words is "two million, nine hundred sixty-one thousand, seven hundred twenty-nine".