745740 has 48 divisors (see below), whose sum is σ = 2321760. Its totient is φ = 198720.

The previous prime is 745733. The next prime is 745741. The reversal of 745740 is 47547.

It is a super-2 number, since 2×745740² = 1112256295200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 151 + ... + 1230.

It is an arithmetic number, because the mean of its divisors is an integer number (48370).

2⁷⁴⁵⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1160880).

745740 is an abundant number, since it is smaller than the sum of its proper divisors (1576020).

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

745740 is a wasteful number, since it uses less digits than its factorization.

745740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399 (or 1391 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 745740 is about 863.5623891764. The cubic root of 745740 is about 90.6836821679.

It can be divided in two parts, 745 and 740, that added together give a triangular number (1485 = T₅₄).

The spelling of 745740 in words is "seven hundred forty-five thousand, seven hundred forty".