2154986 has 8 divisors (see below), whose sum is σ = 3250884. Its totient is φ = 1071360.

The previous prime is 2154979. The next prime is 2155003. The reversal of 2154986 is 6894512.

It can be written as a sum of positive squares in 2 ways, for example, as 1288225 + 866761 = 1135^2 + 931^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2615 + ... + 3338.

2^2154986 is an apocalyptic number.

2154986 is a deficient number, since it is larger than the sum of its proper divisors (1095898).

2154986 is a wasteful number, since it uses less digits than its factorization.

2154986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6136.

The product of its digits is 17280, while the sum is 35.

The square root of 2154986 is about 1467.9870571637. The cubic root of 2154986 is about 129.1659822833.

The spelling of 2154986 in words is "two million, one hundred fifty-four thousand, nine hundred eighty-six".