3431647 has 8 divisors (see below), whose sum is σ = 3647600. Its totient is φ = 3219264.

The previous prime is 3431641. The next prime is 3431689. The reversal of 3431647 is 7461343.

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

It is a 6-Lehmer number, since φ(3431647) divides (3431647-1)⁶.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3431647 is a prime.

It is a super-2 number, since 2×3431647² = 23552402265218, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3431641) 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, 1243 + ... + 2899.

It is an arithmetic number, because the mean of its divisors is an integer number (455950).

Almost surely, 2^3431647 is an apocalyptic number.

3431647 is a deficient number, since it is larger than the sum of its proper divisors (215953).

3431647 is a wasteful number, since it uses less digits than its factorization.

3431647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785.

The product of its digits is 6048, while the sum is 28.

The square root of 3431647 is about 1852.4705125858. The cubic root of 3431647 is about 150.8345629018.

The spelling of 3431647 in words is "three million, four hundred thirty-one thousand, six hundred forty-seven".