1066650139 has 16 divisors (see below), whose sum is σ = 1209415680. Its totient is φ = 935383680.

The previous prime is 1066650127. The next prime is 1066650157. The reversal of 1066650139 is 9310566601.

It is not a de Polignac number, because 1066650139 - 2⁵ = 1066650107 is a prime.

It is a super-2 number, since 2×1066650139² = 2275485038057438642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1066650098 and 1066650107.

It is not an unprimeable number, because it can be changed into a prime (1066650119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25822 + ... + 52915.

It is an arithmetic number, because the mean of its divisors is an integer number (75588480).

Almost surely, 2^1066650139 is an apocalyptic number.

1066650139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1066650139 is a deficient number, since it is larger than the sum of its proper divisors (142765541).

1066650139 is a wasteful number, since it uses less digits than its factorization.

1066650139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78810.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 1066650139 is about 32659.6102089416. The cubic root of 1066650139 is about 1021.7406326196.

The spelling of 1066650139 in words is "one billion, sixty-six million, six hundred fifty thousand, one hundred thirty-nine".