3498781 has 16 divisors (see below), whose sum is σ = 4213440. Its totient is φ = 2862720.

The previous prime is 3498773. The next prime is 3498797. The reversal of 3498781 is 1878943.

It is a cyclic number.

It is not a de Polignac number, because 3498781 - 2³ = 3498773 is a prime.

It is a super-2 number, since 2×3498781² = 24482936971922, which contains 22 as substring.

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

3498781 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3498701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5865 + ... + 6433.

It is an arithmetic number, because the mean of its divisors is an integer number (263340).

Almost surely, 2^3498781 is an apocalyptic number.

It is an amenable number.

3498781 is a deficient number, since it is larger than the sum of its proper divisors (714659).

3498781 is a wasteful number, since it uses less digits than its factorization.

3498781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its digits is 48384, while the sum is 40.

The square root of 3498781 is about 1870.5028735610. The cubic root of 3498781 is about 151.8118198710.

The spelling of 3498781 in words is "three million, four hundred ninety-eight thousand, seven hundred eighty-one".