666250952 has 8 divisors (see below), whose sum is σ = 1249220550. Its totient is φ = 333125472.

The previous prime is 666250939. The next prime is 666250973. The reversal of 666250952 is 259052666.

It can be written as a sum of positive squares in only one way, i.e., 624700036 + 41550916 = 24994^2 + 6446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41640677 + ... + 41640692.

Almost surely, 2^666250952 is an apocalyptic number.

It is an amenable number.

666250952 is a deficient number, since it is larger than the sum of its proper divisors (582969598).

666250952 is a wasteful number, since it uses less digits than its factorization.

666250952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83281375 (or 83281371 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 666250952 is about 25811.8374394385. The cubic root of 666250952 is about 873.3988468746.

The spelling of 666250952 in words is "six hundred sixty-six million, two hundred fifty thousand, nine hundred fifty-two".