3451985 has 4 divisors (see below), whose sum is σ = 4142388. Its totient is φ = 2761584.

The previous prime is 3451967. The next prime is 3451991. The reversal of 3451985 is 5891543.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 368449 + 3083536 = 607^2 + 1756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3451985 is a prime.

It is a Duffinian number.

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, 345194 + ... + 345203.

It is an arithmetic number, because the mean of its divisors is an integer number (1035597).

Almost surely, 2^3451985 is an apocalyptic number.

It is an amenable number.

3451985 is a deficient number, since it is larger than the sum of its proper divisors (690403).

3451985 is an equidigital number, since it uses as much as digits as its factorization.

3451985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690402.

The product of its digits is 21600, while the sum is 35.

The square root of 3451985 is about 1857.9518293002. The cubic root of 3451985 is about 151.1319548854.

The spelling of 3451985 in words is "three million, four hundred fifty-one thousand, nine hundred eighty-five".