2071690 has 8 divisors (see below), whose sum is σ = 3729060. Its totient is φ = 828672.

The previous prime is 2071687. The next prime is 2071711. The reversal of 2071690 is 961702.

It can be written as a sum of positive squares in 2 ways, for example, as 1896129 + 175561 = 1377^2 + 419^2 .

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

It is a super-2 number, since 2×2071690² = 8583798912200, which contains 22 as substring.

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, 103575 + ... + 103594.

2^2071690 is an apocalyptic number.

2071690 is a deficient number, since it is larger than the sum of its proper divisors (1657370).

2071690 is a wasteful number, since it uses less digits than its factorization.

2071690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207176.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 2071690 is about 1439.3366527675. The cubic root of 2071690 is about 127.4798635379.

The spelling of 2071690 in words is "two million, seventy-one thousand, six hundred ninety".