1386222666 has 16 divisors (see below), whose sum is σ = 2780439264. Its totient is φ = 460741904.

The previous prime is 1386222661. The next prime is 1386222679. The reversal of 1386222666 is 6662226831.

It is a happy number.

It is a super-2 number, since 2×1386222666² = 3843226559464295112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1386222661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330825 + ... + 334988.

It is an arithmetic number, because the mean of its divisors is an integer number (173777454).

Almost surely, 2^1386222666 is an apocalyptic number.

1386222666 is an abundant number, since it is smaller than the sum of its proper divisors (1394216598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1386222666 is a wasteful number, since it uses less digits than its factorization.

1386222666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666165.

The product of its digits is 248832, while the sum is 42.

The square root of 1386222666 is about 37232.0113074757. The cubic root of 1386222666 is about 1115.0071831533.

The spelling of 1386222666 in words is "one billion, three hundred eighty-six million, two hundred twenty-two thousand, six hundred sixty-six".