1226666407 has 2 divisors, whose sum is σ = 1226666408. Its totient is φ = 1226666406.

The previous prime is 1226666393. The next prime is 1226666431. The reversal of 1226666407 is 7046666221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1226666407 - 2⁷ = 1226666279 is a prime.

It is a super-3 number, since 3×1226666407³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1226666407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226664407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613333203 + 613333204.

It is an arithmetic number, because the mean of its divisors is an integer number (613333204).

Almost surely, 2^1226666407 is an apocalyptic number.

1226666407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226666407 is an equidigital number, since it uses as much as digits as its factorization.

1226666407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 1226666407 is about 35023.7977238334. The cubic root of 1226666407 is about 1070.4724402199.

The spelling of 1226666407 in words is "one billion, two hundred twenty-six million, six hundred sixty-six thousand, four hundred seven".