787261 has 2 divisors, whose sum is σ = 787262. Its totient is φ = 787260.

The previous prime is 787243. The next prime is 787277. The reversal of 787261 is 162787.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 632025 + 155236 = 795^2 + 394^2 .

It is an emirp because it is prime and its reverse (162787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 787261 - 2¹³ = 779069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (787361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393630 + 393631.

It is an arithmetic number, because the mean of its divisors is an integer number (393631).

2⁷⁸⁷²⁶¹ is an apocalyptic number.

It is an amenable number.

787261 is a deficient number, since it is larger than the sum of its proper divisors (1).

787261 is an equidigital number, since it uses as much as digits as its factorization.

787261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 31.

The square root of 787261 is about 887.2772960017. The cubic root of 787261 is about 92.3363945110.

The spelling of 787261 in words is "seven hundred eighty-seven thousand, two hundred sixty-one".