307693 has 2 divisors, whose sum is σ = 307694. Its totient is φ = 307692.

The previous prime is 307691. The next prime is 307711. The reversal of 307693 is 396703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213444 + 94249 = 462^2 + 307^2 .

It is an emirp because it is prime and its reverse (396703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 307693 - 2¹ = 307691 is a prime.

Together with 307691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (307691) 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, 153846 + 153847.

It is an arithmetic number, because the mean of its divisors is an integer number (153847).

2³⁰⁷⁶⁹³ is an apocalyptic number.

307693 is the 297-th centered heptagonal number.

It is an amenable number.

307693 is a deficient number, since it is larger than the sum of its proper divisors (1).

307693 is an equidigital number, since it uses as much as digits as its factorization.

307693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 307693 is about 554.7008202626. The cubic root of 307693 is about 67.5106887509.

It can be divided in two parts, 307 and 693, that added together give a cube (1000 = 10³).

The spelling of 307693 in words is "three hundred seven thousand, six hundred ninety-three".