3491623 has 8 divisors (see below), whose sum is σ = 3631616. Its totient is φ = 3353400.

The previous prime is 3491617. The next prime is 3491627. The reversal of 3491623 is 3261943.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3491623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3491591 and 3491600.

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 7 ways as a sum of consecutive naturals, for example, 4708 + ... + 5398.

It is an arithmetic number, because the mean of its divisors is an integer number (453952).

Almost surely, 2^3491623 is an apocalyptic number.

3491623 is a deficient number, since it is larger than the sum of its proper divisors (139993).

3491623 is a wasteful number, since it uses less digits than its factorization.

3491623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885.

The product of its digits is 3888, while the sum is 28.

The square root of 3491623 is about 1868.5885047276. The cubic root of 3491623 is about 151.7082208455.

It can be divided in two parts, 3491 and 623, that added together give a palindrome (4114).

The spelling of 3491623 in words is "three million, four hundred ninety-one thousand, six hundred twenty-three".