2978985 has 8 divisors (see below), whose sum is σ = 4766400. Its totient is φ = 1588784.

The previous prime is 2978977. The next prime is 2978999. The reversal of 2978985 is 5898792.

It is a happy number.

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 2978985 - 2³ = 2978977 is a prime.

It is a Curzon number.

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, 99285 + ... + 99314.

It is an arithmetic number, because the mean of its divisors is an integer number (595800).

2^2978985 is an apocalyptic number.

It is an amenable number.

2978985 is a deficient number, since it is larger than the sum of its proper divisors (1787415).

2978985 is a wasteful number, since it uses less digits than its factorization.

2978985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198607.

The product of its digits is 362880, while the sum is 48.

The square root of 2978985 is about 1725.9736382691. The cubic root of 2978985 is about 143.8874023346.

The spelling of 2978985 in words is "two million, nine hundred seventy-eight thousand, nine hundred eighty-five".