64222811 has 2 divisors, whose sum is σ = 64222812. Its totient is φ = 64222810.

The previous prime is 64222799. The next prime is 64222843. The reversal of 64222811 is 11822246.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64222811 - 2⁶ = 64222747 is a prime.

It is a super-3 number, since 3×64222811³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (64242811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32111405 + 32111406.

It is an arithmetic number, because the mean of its divisors is an integer number (32111406).

Almost surely, 2^64222811 is an apocalyptic number.

64222811 is a deficient number, since it is larger than the sum of its proper divisors (1).

64222811 is an equidigital number, since it uses as much as digits as its factorization.

64222811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 26.

The square root of 64222811 is about 8013.9135882539. The cubic root of 64222811 is about 400.4636519429.

The spelling of 64222811 in words is "sixty-four million, two hundred twenty-two thousand, eight hundred eleven".