612220669 has 2 divisors, whose sum is σ = 612220670. Its totient is φ = 612220668.

The previous prime is 612220663. The next prime is 612220681. The reversal of 612220669 is 966022216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 606636900 + 5583769 = 24630^2 + 2363^2 .

It is a cyclic number.

It is not a de Polignac number, because 612220669 - 2¹⁹ = 611696381 is a prime.

It is a super-2 number, since 2×612220669² = 749628295101615122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612220663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306110334 + 306110335.

It is an arithmetic number, because the mean of its divisors is an integer number (306110335).

Almost surely, 2^612220669 is an apocalyptic number.

It is an amenable number.

612220669 is a deficient number, since it is larger than the sum of its proper divisors (1).

612220669 is an equidigital number, since it uses as much as digits as its factorization.

612220669 is an odious number, because the sum of its binary digits is odd.

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

The square root of 612220669 is about 24743.0933595620. The cubic root of 612220669 is about 849.1205062199.

The spelling of 612220669 in words is "six hundred twelve million, two hundred twenty thousand, six hundred sixty-nine".