2977945 has 8 divisors (see below), whose sum is σ = 3670344. Its totient is φ = 2317824.

The previous prime is 2977939. The next prime is 2977951. The reversal of 2977945 is 5497792.

2977945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2977939) and next prime (2977951).

It can be written as a sum of positive squares in 4 ways, for example, as 915849 + 2062096 = 957^2 + 1436^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2977945 - 2³ = 2977937 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is an unprimeable number.

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, 7864 + ... + 8233.

It is an arithmetic number, because the mean of its divisors is an integer number (458793).

2^2977945 is an apocalyptic number.

It is an amenable number.

2977945 is a deficient number, since it is larger than the sum of its proper divisors (692399).

2977945 is a wasteful number, since it uses less digits than its factorization.

2977945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16139.

The product of its digits is 158760, while the sum is 43.

The square root of 2977945 is about 1725.6723327445. The cubic root of 2977945 is about 143.8706561033.

The spelling of 2977945 in words is "two million, nine hundred seventy-seven thousand, nine hundred forty-five".