2745749 has 8 divisors (see below), whose sum is σ = 2881560. Its totient is φ = 2612736.

The previous prime is 2745737. The next prime is 2745761. The reversal of 2745749 is 9475472.

2745749 = 58² + 59² + ... + 203².

It is an interprime number because it is at equal distance from previous prime (2745737) and next prime (2745761).

It can be written as a sum of positive squares in 4 ways, for example, as 1423249 + 1322500 = 1193^2 + 1150^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2745749 - 2¹² = 2741653 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 (2745719) 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, 1469 + ... + 2765.

It is an arithmetic number, because the mean of its divisors is an integer number (360195).

2^2745749 is an apocalyptic number.

2745749 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2745749 is a deficient number, since it is larger than the sum of its proper divisors (135811).

2745749 is a wasteful number, since it uses less digits than its factorization.

2745749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399.

The product of its digits is 70560, while the sum is 38.

The square root of 2745749 is about 1657.0301747403. The cubic root of 2745749 is about 140.0297385805.

The spelling of 2745749 in words is "two million, seven hundred forty-five thousand, seven hundred forty-nine".