3572749 has 4 divisors (see below), whose sum is σ = 3576636. Its totient is φ = 3568864.

The previous prime is 3572731. The next prime is 3572819. The reversal of 3572749 is 9472753.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9472753 = 347 ⋅27299.

It can be written as a sum of positive squares in 2 ways, for example, as 1397124 + 2175625 = 1182^2 + 1475^2 .

It is a cyclic number.

It is not a de Polignac number, because 3572749 - 2¹³ = 3564557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3572729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297 + ... + 2689.

It is an arithmetic number, because the mean of its divisors is an integer number (894159).

Almost surely, 2^3572749 is an apocalyptic number.

It is an amenable number.

3572749 is a deficient number, since it is larger than the sum of its proper divisors (3887).

3572749 is a wasteful number, since it uses less digits than its factorization.

3572749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3886.

The product of its digits is 52920, while the sum is 37.

The square root of 3572749 is about 1890.1716853238. The cubic root of 3572749 is about 152.8741899392.

The spelling of 3572749 in words is "three million, five hundred seventy-two thousand, seven hundred forty-nine".