1066623375 has 16 divisors (see below), whose sum is σ = 1774861920. Its totient is φ = 568865600.

The previous prime is 1066623307. The next prime is 1066623379. The reversal of 1066623375 is 5733266601.

It is not a de Polignac number, because 1066623375 - 2⁸ = 1066623119 is a prime.

It is a super-2 number, since 2×1066623375² = 2275370848192781250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066623379) 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, 1421790 + ... + 1422539.

It is an arithmetic number, because the mean of its divisors is an integer number (110928870).

Almost surely, 2^1066623375 is an apocalyptic number.

1066623375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1066623375 is a deficient number, since it is larger than the sum of its proper divisors (708238545).

1066623375 is an equidigital number, since it uses as much as digits as its factorization.

1066623375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844347 (or 2844337 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 39.

The square root of 1066623375 is about 32659.2004648001. The cubic root of 1066623375 is about 1021.7320868325.

Adding to 1066623375 its reverse (5733266601), we get a palindrome (6799889976).

The spelling of 1066623375 in words is "one billion, sixty-six million, six hundred twenty-three thousand, three hundred seventy-five".