1645794 has 12 divisors (see below), whose sum is σ = 3565926. Its totient is φ = 548592.

The previous prime is 1645771. The next prime is 1645801. The reversal of 1645794 is 4975461.

1645794 is a `hidden beast` number, since 1 + 645 + 7 + 9 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1595169 + 50625 = 1263^2 + 225^2 .

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45699 + ... + 45734.

2^1645794 is an apocalyptic number.

1645794 is an abundant number, since it is smaller than the sum of its proper divisors (1920132).

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

1645794 is a wasteful number, since it uses less digits than its factorization.

1645794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91441 (or 91438 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 1645794 is about 1282.8850299228. The cubic root of 1645794 is about 118.0660838305.

The spelling of 1645794 in words is "one million, six hundred forty-five thousand, seven hundred ninety-four".