736381 has 2 divisors, whose sum is σ = 736382. Its totient is φ = 736380.

The previous prime is 736369. The next prime is 736387. The reversal of 736381 is 183637.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 416025 + 320356 = 645^2 + 566^2 .

It is an emirp because it is prime and its reverse (183637) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 736381 - 2¹⁷ = 605309 is a prime.

It is a super-2 number, since 2×736381² = 1084513954322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (736387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 368190 + 368191.

It is an arithmetic number, because the mean of its divisors is an integer number (368191).

2⁷³⁶³⁸¹ is an apocalyptic number.

It is an amenable number.

736381 is a deficient number, since it is larger than the sum of its proper divisors (1).

736381 is an equidigital number, since it uses as much as digits as its factorization.

736381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 736381 is about 858.1264475589. The cubic root of 736381 is about 90.3027254620.

The spelling of 736381 in words is "seven hundred thirty-six thousand, three hundred eighty-one".