745361 has 6 divisors (see below), whose sum is σ = 779730. Its totient is φ = 712448.

The previous prime is 745357. The next prime is 745369. The reversal of 745361 is 163547.

745361 = T₂₄₃ + T₂₄₄ + ... + T₂₆₅.

It can be written as a sum of positive squares in only one way, i.e., 414736 + 330625 = 644^2 + 575^2 .

It is not a de Polignac number, because 745361 - 2² = 745357 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 745361.

It is not an unprimeable number, because it can be changed into a prime (745369) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 176 + ... + 1233.

It is an arithmetic number, because the mean of its divisors is an integer number (129955).

2⁷⁴⁵³⁶¹ is an apocalyptic number.

It is an amenable number.

745361 is a deficient number, since it is larger than the sum of its proper divisors (34369).

745361 is a wasteful number, since it uses less digits than its factorization.

745361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455 (or 1432 counting only the distinct ones).

The product of its digits is 2520, while the sum is 26.

The square root of 745361 is about 863.3429214397. The cubic root of 745361 is about 90.6683171436.

The spelling of 745361 in words is "seven hundred forty-five thousand, three hundred sixty-one".