1335645 has 24 divisors (see below), whose sum is σ = 2354976. Its totient is φ = 700128.

The previous prime is 1335641. The next prime is 1335647. The reversal of 1335645 is 5465331.

1335645 is a `hidden beast` number, since 13 + 3 + 5 + 645 = 666.

It is not a de Polignac number, because 1335645 - 2² = 1335641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1335641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2794 + ... + 3236.

It is an arithmetic number, because the mean of its divisors is an integer number (98124).

2^1335645 is an apocalyptic number.

1335645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1335645 is a deficient number, since it is larger than the sum of its proper divisors (1019331).

1335645 is a wasteful number, since it uses less digits than its factorization.

1335645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 518 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 1335645 is about 1155.7010859214. The cubic root of 1335645 is about 110.1278128647.

It can be divided in two parts, 133 and 5645, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 1335645 in words is "one million, three hundred thirty-five thousand, six hundred forty-five".