1645412 has 24 divisors (see below), whose sum is σ = 3010560. Its totient is φ = 786240.

The previous prime is 1645409. The next prime is 1645417. The reversal of 1645412 is 2145461.

1645412 is a modest number, since divided by 5412 gives 164 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1645417) 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, 12893 + ... + 13019.

It is an arithmetic number, because the mean of its divisors is an integer number (125440).

2^1645412 is an apocalyptic number.

It is an amenable number.

1645412 is a deficient number, since it is larger than the sum of its proper divisors (1365148).

1645412 is a wasteful number, since it uses less digits than its factorization.

1645412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 249 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 1645412 is about 1282.7361381048. The cubic root of 1645412 is about 118.0569484762.

The spelling of 1645412 in words is "one million, six hundred forty-five thousand, four hundred twelve".