2101678 has 8 divisors (see below), whose sum is σ = 3162600. Its totient is φ = 1047480.

The previous prime is 2101669. The next prime is 2101681. The reversal of 2101678 is 8761012.

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

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

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, 808 + ... + 2203.

It is an arithmetic number, because the mean of its divisors is an integer number (395325).

2^2101678 is an apocalyptic number.

2101678 is a deficient number, since it is larger than the sum of its proper divisors (1060922).

2101678 is a wasteful number, since it uses less digits than its factorization.

2101678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 2101678 is about 1449.7165240143. The cubic root of 2101678 is about 128.0920155425.

It can be divided in two parts, 210 and 1678, that multiplied together give a triangular number (352380 = T₈₃₉).

The spelling of 2101678 in words is "two million, one hundred one thousand, six hundred seventy-eight".