69226621 has 2 divisors, whose sum is σ = 69226622. Its totient is φ = 69226620.

The previous prime is 69226607. The next prime is 69226631. The reversal of 69226621 is 12662296.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46090521 + 23136100 = 6789^2 + 4810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69226621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69226631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34613310 + 34613311.

It is an arithmetic number, because the mean of its divisors is an integer number (34613311).

Almost surely, 2^69226621 is an apocalyptic number.

It is an amenable number.

69226621 is a deficient number, since it is larger than the sum of its proper divisors (1).

69226621 is an equidigital number, since it uses as much as digits as its factorization.

69226621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 69226621 is about 8320.2536619985. The cubic root of 69226621 is about 410.6051365544.

The spelling of 69226621 in words is "sixty-nine million, two hundred twenty-six thousand, six hundred twenty-one".