3427997 has 4 divisors (see below), whose sum is σ = 3445596. Its totient is φ = 3410400.

The previous prime is 3427981. The next prime is 3428021. The reversal of 3427997 is 7997243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7997243 = 29 ⋅275767.

It can be written as a sum of positive squares in 2 ways, for example, as 2859481 + 568516 = 1691^2 + 754^2 .

It is a cyclic number.

It is not a de Polignac number, because 3427997 - 2⁴ = 3427981 is a prime.

It is a d-powerful number, because it can be written as 3¹¹ + 4⁹ + 2²¹ + 7⁴ + 9⁴ + 9⁵ + 7⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3427967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8504 + ... + 8897.

It is an arithmetic number, because the mean of its divisors is an integer number (861399).

Almost surely, 2^3427997 is an apocalyptic number.

It is an amenable number.

3427997 is a deficient number, since it is larger than the sum of its proper divisors (17599).

3427997 is a wasteful number, since it uses less digits than its factorization.

3427997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17598.

The product of its digits is 95256, while the sum is 41.

The square root of 3427997 is about 1851.4850796050. The cubic root of 3427997 is about 150.7810665814.

Adding to 3427997 its product of digits (95256), we get a palindrome (3523253).

The spelling of 3427997 in words is "three million, four hundred twenty-seven thousand, nine hundred ninety-seven".