66952367 has 4 divisors (see below), whose sum is σ = 66982176. Its totient is φ = 66922560.

The previous prime is 66952357. The next prime is 66952399. The reversal of 66952367 is 76325966.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76325966 = 2 ⋅38162983.

It is a cyclic number.

It is not a de Polignac number, because 66952367 - 2¹⁴ = 66935983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66952357) 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, 11234 + ... + 16127.

It is an arithmetic number, because the mean of its divisors is an integer number (16745544).

Almost surely, 2^66952367 is an apocalyptic number.

66952367 is a deficient number, since it is larger than the sum of its proper divisors (29809).

66952367 is a wasteful number, since it uses less digits than its factorization.

66952367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29808.

The product of its digits is 408240, while the sum is 44.

The square root of 66952367 is about 8182.4426059704. The cubic root of 66952367 is about 406.0585366188.

The spelling of 66952367 in words is "sixty-six million, nine hundred fifty-two thousand, three hundred sixty-seven".