3480813 has 30 divisors (see below), whose sum is σ = 6055566. Its totient is φ = 1986768.

The previous prime is 3480809. The next prime is 3480821. The reversal of 3480813 is 3180843.

It can be written as a sum of positive squares in only one way, i.e., 3337929 + 142884 = 1827^2 + 378^2 .

It is not a de Polignac number, because 3480813 - 2² = 3480809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

3480813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3480833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3531 + ... + 4407.

Almost surely, 2^3480813 is an apocalyptic number.

It is an amenable number.

3480813 is a deficient number, since it is larger than the sum of its proper divisors (2574753).

3480813 is an equidigital number, since it uses as much as digits as its factorization.

3480813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 3480813 is about 1865.6937047651. The cubic root of 3480813 is about 151.5514970508.

The spelling of 3480813 in words is "three million, four hundred eighty thousand, eight hundred thirteen".