764261 has 2 divisors, whose sum is σ = 764262. Its totient is φ = 764260.

The previous prime is 764251. The next prime is 764273. The reversal of 764261 is 162467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532900 + 231361 = 730^2 + 481^2 .

It is a cyclic number.

It is not a de Polignac number, because 764261 - 2¹⁰ = 763237 is a prime.

It is a super-2 number, since 2×764261² = 1168189752242, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 7 and base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 764261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (764251) 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 as a sum of consecutive naturals, namely, 382130 + 382131.

It is an arithmetic number, because the mean of its divisors is an integer number (382131).

2⁷⁶⁴²⁶¹ is an apocalyptic number.

It is an amenable number.

764261 is a deficient number, since it is larger than the sum of its proper divisors (1).

764261 is an equidigital number, since it uses as much as digits as its factorization.

764261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 764261 is about 874.2202239711. The cubic root of 764261 is about 91.4282834580.

The spelling of 764261 in words is "seven hundred sixty-four thousand, two hundred sixty-one".