3774645 has 48 divisors (see below), whose sum is σ = 7817472. Its totient is φ = 1647360.

The previous prime is 3774623. The next prime is 3774649. The reversal of 3774645 is 5464773.

3774645 is a `hidden beast` number, since 3 + 7 + 7 + 4 + 645 = 666.

It is not a de Polignac number, because 3774645 - 2⁶ = 3774581 is a prime.

It is a Curzon number.

3774645 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3774649) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6985 + ... + 7505.

It is an arithmetic number, because the mean of its divisors is an integer number (162864).

Almost surely, 2^3774645 is an apocalyptic number.

3774645 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3774645 is an abundant number, since it is smaller than the sum of its proper divisors (4042827).

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

3774645 is a wasteful number, since it uses less digits than its factorization.

3774645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 559 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 3774645 is about 1942.8445640349. The cubic root of 3774645 is about 155.7012279582.

The spelling of 3774645 in words is "three million, seven hundred seventy-four thousand, six hundred forty-five".