1906745 has 8 divisors (see below), whose sum is σ = 2408640. Its totient is φ = 1445040.

The previous prime is 1906739. The next prime is 1906747. The reversal of 1906745 is 5476091.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1906745 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1906747) 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, 9941 + ... + 10130.

It is an arithmetic number, because the mean of its divisors is an integer number (301080).

2^1906745 is an apocalyptic number.

It is an amenable number.

1906745 is a deficient number, since it is larger than the sum of its proper divisors (501895).

1906745 is a wasteful number, since it uses less digits than its factorization.

1906745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20095.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1906745 is about 1380.8493762898. The cubic root of 1906745 is about 124.0026230801.

The spelling of 1906745 in words is "one million, nine hundred six thousand, seven hundred forty-five".