2906945 has 8 divisors (see below), whose sum is σ = 3502440. Its totient is φ = 2316160.

The previous prime is 2906887. The next prime is 2906951. The reversal of 2906945 is 5496092.

It can be written as a sum of positive squares in 4 ways, for example, as 141376 + 2765569 = 376^2 + 1663^2 .

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

It is not a de Polignac number, because 2906945 - 2¹⁰ = 2905921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371 + ... + 2439.

It is an arithmetic number, because the mean of its divisors is an integer number (437805).

2^2906945 is an apocalyptic number.

It is an amenable number.

2906945 is a deficient number, since it is larger than the sum of its proper divisors (595495).

2906945 is a wasteful number, since it uses less digits than its factorization.

2906945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 2906945 is about 1704.9765394280. The cubic root of 2906945 is about 142.7180615434.

The spelling of 2906945 in words is "two million, nine hundred six thousand, nine hundred forty-five".