666525627 has 12 divisors (see below), whose sum is σ = 969137104. Its totient is φ = 441406800.

The previous prime is 666525619. The next prime is 666525649. The reversal of 666525627 is 726525666.

It is not a de Polignac number, because 666525627 - 2³ = 666525619 is a prime.

It is a super-2 number, since 2×666525627² = 888512822895486258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666525617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243868 + ... + 246585.

Almost surely, 2^666525627 is an apocalyptic number.

666525627 is a deficient number, since it is larger than the sum of its proper divisors (302611477).

666525627 is a wasteful number, since it uses less digits than its factorization.

666525627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490610 (or 490607 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 666525627 is about 25817.1576088461. The cubic root of 666525627 is about 873.5188556427.

The spelling of 666525627 in words is "six hundred sixty-six million, five hundred twenty-five thousand, six hundred twenty-seven".