736145 has 4 divisors (see below), whose sum is σ = 883380. Its totient is φ = 588912.

The previous prime is 736121. The next prime is 736147. The reversal of 736145 is 541637.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 430336 + 305809 = 656^2 + 553^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-736145 is a prime.

It is a super-2 number, since 2×736145² = 1083818922050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (736147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73610 + ... + 73619.

It is an arithmetic number, because the mean of its divisors is an integer number (220845).

2⁷³⁶¹⁴⁵ is an apocalyptic number.

It is an amenable number.

736145 is a deficient number, since it is larger than the sum of its proper divisors (147235).

736145 is a wasteful number, since it uses less digits than its factorization.

736145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147234.

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

The square root of 736145 is about 857.9889276675. The cubic root of 736145 is about 90.2930775034.

The spelling of 736145 in words is "seven hundred thirty-six thousand, one hundred forty-five".