745749 has 24 divisors (see below), whose sum is σ = 1153152. Its totient is φ = 463680.

The previous prime is 745747. The next prime is 745751. The reversal of 745749 is 947547.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (745747) and next prime (745751).

It is not a de Polignac number, because 745749 - 2¹ = 745747 is a prime.

It is a super-2 number, since 2×745749² = 1112283142002, which contains 22 as substring.

It is a plaindrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 745749.

It is not an unprimeable number, because it can be changed into a prime (745741) 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, 15844 + ... + 15890.

It is an arithmetic number, because the mean of its divisors is an integer number (48048).

2⁷⁴⁵⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

745749 is a deficient number, since it is larger than the sum of its proper divisors (407403).

745749 is a wasteful number, since it uses less digits than its factorization.

745749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 134 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 745749 is about 863.5676001333. The cubic root of 745749 is about 90.6840469732.

The spelling of 745749 in words is "seven hundred forty-five thousand, seven hundred forty-nine".