2137685 has 8 divisors (see below), whose sum is σ = 2798496. Its totient is φ = 1554640.

The previous prime is 2137679. The next prime is 2137687. The reversal of 2137685 is 5867312.

It is a happy number.

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

It is not a de Polignac number, because 2137685 - 2⁴ = 2137669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2137687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19379 + ... + 19488.

It is an arithmetic number, because the mean of its divisors is an integer number (349812).

2^2137685 is an apocalyptic number.

It is an amenable number.

2137685 is a deficient number, since it is larger than the sum of its proper divisors (660811).

2137685 is a wasteful number, since it uses less digits than its factorization.

2137685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38883.

The product of its digits is 10080, while the sum is 32.

The square root of 2137685 is about 1462.0824190175. The cubic root of 2137685 is about 128.8193894977.

The spelling of 2137685 in words is "two million, one hundred thirty-seven thousand, six hundred eighty-five".