66969695 has 16 divisors (see below), whose sum is σ = 87363360. Its totient is φ = 48987264.

The previous prime is 66969677. The next prime is 66969713. The reversal of 66969695 is 59696966.

It is an interprime number because it is at equal distance from previous prime (66969677) and next prime (66969713).

It is a cyclic number.

It is not a de Polignac number, because 66969695 - 2¹⁴ = 66953311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66969695.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2141 + ... + 11769.

It is an arithmetic number, because the mean of its divisors is an integer number (5460210).

Almost surely, 2^66969695 is an apocalyptic number.

66969695 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66969695 is a deficient number, since it is larger than the sum of its proper divisors (20393665).

66969695 is a wasteful number, since it uses less digits than its factorization.

66969695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9754.

The product of its digits is 4723920, while the sum is 56.

The square root of 66969695 is about 8183.5013899919. The cubic root of 66969695 is about 406.0935643841.

The spelling of 66969695 in words is "sixty-six million, nine hundred sixty-nine thousand, six hundred ninety-five".