66952552 has 8 divisors (see below), whose sum is σ = 125536050. Its totient is φ = 33476272.

The previous prime is 66952541. The next prime is 66952553. The reversal of 66952552 is 25525966.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 63904036 + 3048516 = 7994^2 + 1746^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66952553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4184527 + ... + 4184542.

Almost surely, 2^66952552 is an apocalyptic number.

It is an amenable number.

66952552 is a deficient number, since it is larger than the sum of its proper divisors (58583498).

66952552 is a wasteful number, since it uses less digits than its factorization.

66952552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8369075 (or 8369071 counting only the distinct ones).

The product of its digits is 162000, while the sum is 40.

The square root of 66952552 is about 8182.4539106554. The cubic root of 66952552 is about 406.0589106198.

The spelling of 66952552 in words is "sixty-six million, nine hundred fifty-two thousand, five hundred fifty-two".