66950495 has 4 divisors (see below), whose sum is σ = 80340600. Its totient is φ = 53560392.

The previous prime is 66950491. The next prime is 66950503. The reversal of 66950495 is 59405966.

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

It is a cyclic number.

It is not a de Polignac number, because 66950495 - 2² = 66950491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66950491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6695045 + ... + 6695054.

It is an arithmetic number, because the mean of its divisors is an integer number (20085150).

Almost surely, 2^66950495 is an apocalyptic number.

66950495 is a deficient number, since it is larger than the sum of its proper divisors (13390105).

66950495 is a wasteful number, since it uses less digits than its factorization.

66950495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13390104.

The product of its (nonzero) digits is 291600, while the sum is 44.

The square root of 66950495 is about 8182.3282139010. The cubic root of 66950495 is about 406.0547520941.

The spelling of 66950495 in words is "sixty-six million, nine hundred fifty thousand, four hundred ninety-five".