3491620 has 48 divisors (see below), whose sum is σ = 8164800. Its totient is φ = 1243520.

The previous prime is 3491617. The next prime is 3491627. The reversal of 3491620 is 261943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3491627) 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, 12846 + ... + 13114.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

Almost surely, 2^3491620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3491620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4082400).

3491620 is an abundant number, since it is smaller than the sum of its proper divisors (4673180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3491620 is a wasteful number, since it uses less digits than its factorization.

3491620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 3491620 is about 1868.5877019824. The cubic root of 3491620 is about 151.7081773963.

The spelling of 3491620 in words is "three million, four hundred ninety-one thousand, six hundred twenty".