2920669 has 8 divisors (see below), whose sum is σ = 3022520. Its totient is φ = 2820096.

The previous prime is 2920649. The next prime is 2920691. The reversal of 2920669 is 9660292.

2920669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1295044 + 1625625 = 1138^2 + 1275^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 6-Lehmer number, since φ(2920669) divides (2920669-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 2920669 - 2⁵ = 2920637 is a prime.

It is a super-2 number, since 2×2920669² = 17060614815122, which contains 22 as substring.

It is a Duffinian number.

2920669 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2920649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6937 + ... + 7345.

It is an arithmetic number, because the mean of its divisors is an integer number (377815).

2^2920669 is an apocalyptic number.

It is an amenable number.

2920669 is a deficient number, since it is larger than the sum of its proper divisors (101851).

2920669 is a wasteful number, since it uses less digits than its factorization.

2920669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 2920669 is about 1708.9964891713. The cubic root of 2920669 is about 142.9423047935.

The spelling of 2920669 in words is "two million, nine hundred twenty thousand, six hundred sixty-nine".