66950626 has 4 divisors (see below), whose sum is σ = 100425942. Its totient is φ = 33475312.

The previous prime is 66950593. The next prime is 66950627. The reversal of 66950626 is 62605966.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59305401 + 7645225 = 7701^2 + 2765^2 .

It is not an unprimeable number, because it can be changed into a prime (66950627) 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, 16737655 + ... + 16737658.

Almost surely, 2^66950626 is an apocalyptic number.

66950626 is a deficient number, since it is larger than the sum of its proper divisors (33475316).

66950626 is a wasteful number, since it uses less digits than its factorization.

66950626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33475315.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 66950626 is about 8182.3362189536. The cubic root of 66950626 is about 406.0550169322.

It can be divided in two parts, 66950 and 626, that added together give a palindrome (67576).

The spelling of 66950626 in words is "sixty-six million, nine hundred fifty thousand, six hundred twenty-six".