78226903 has 2 divisors, whose sum is σ = 78226904. Its totient is φ = 78226902.

The previous prime is 78226901. The next prime is 78226921. The reversal of 78226903 is 30962287.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78226903 - 2¹ = 78226901 is a prime.

It is a super-2 number, since 2×78226903² = 12238896705942818, which contains 22 as substring.

Together with 78226901, 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 (78226901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39113451 + 39113452.

It is an arithmetic number, because the mean of its divisors is an integer number (39113452).

Almost surely, 2^78226903 is an apocalyptic number.

78226903 is a deficient number, since it is larger than the sum of its proper divisors (1).

78226903 is an equidigital number, since it uses as much as digits as its factorization.

78226903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 78226903 is about 8844.5973904978. The cubic root of 78226903 is about 427.6797743721.

It can be divided in two parts, 78 and 226903, that added together give a cube (226981 = 61³).

The spelling of 78226903 in words is "seventy-eight million, two hundred twenty-six thousand, nine hundred three".