2115977 has 8 divisors (see below), whose sum is σ = 2223936. Its totient is φ = 2009392.

The previous prime is 2115961. The next prime is 2115979. The reversal of 2115977 is 7795112.

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 2115977 - 2⁴ = 2115961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4298 + ... + 4764.

It is an arithmetic number, because the mean of its divisors is an integer number (277992).

2^2115977 is an apocalyptic number.

It is an amenable number.

2115977 is a deficient number, since it is larger than the sum of its proper divisors (107959).

2115977 is a wasteful number, since it uses less digits than its factorization.

2115977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687.

The product of its digits is 4410, while the sum is 32.

The square root of 2115977 is about 1454.6398179618. The cubic root of 2115977 is about 128.3818553049.

The spelling of 2115977 in words is "two million, one hundred fifteen thousand, nine hundred seventy-seven".