1745406 has 24 divisors (see below), whose sum is σ = 4073160. Its totient is φ = 536976.

The previous prime is 1745389. The next prime is 1745431. The reversal of 1745406 is 6045471.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1745406.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3496 + ... + 3963.

It is an arithmetic number, because the mean of its divisors is an integer number (169715).

2^1745406 is an apocalyptic number.

1745406 is an abundant number, since it is smaller than the sum of its proper divisors (2327754).

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

1745406 is a wasteful number, since it uses less digits than its factorization.

1745406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7480 (or 7477 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 1745406 is about 1321.1381456911. The cubic root of 1745406 is about 120.4015713382.

The spelling of 1745406 in words is "one million, seven hundred forty-five thousand, four hundred six".