69226981 has 2 divisors, whose sum is σ = 69226982. Its totient is φ = 69226980.

The previous prime is 69226961. The next prime is 69227023. The reversal of 69226981 is 18962296.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62252100 + 6974881 = 7890^2 + 2641^2 .

It is a cyclic number.

It is not a de Polignac number, because 69226981 - 2⁷ = 69226853 is a prime.

It is a super-2 number, since 2×69226981² = 9584749796748722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69226951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34613490 + 34613491.

It is an arithmetic number, because the mean of its divisors is an integer number (34613491).

Almost surely, 2^69226981 is an apocalyptic number.

It is an amenable number.

69226981 is a deficient number, since it is larger than the sum of its proper divisors (1).

69226981 is an equidigital number, since it uses as much as digits as its factorization.

69226981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 43.

The square root of 69226981 is about 8320.2752959262. The cubic root of 69226981 is about 410.6058483114.

It can be divided in two parts, 69226 and 981, that added together give a palindrome (70207).

The spelling of 69226981 in words is "sixty-nine million, two hundred twenty-six thousand, nine hundred eighty-one".