66947295 has 8 divisors (see below), whose sum is σ = 107115696. Its totient is φ = 35705216.

The previous prime is 66947291. The next prime is 66947303. The reversal of 66947295 is 59274966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66947295 - 2² = 66947291 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66947291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2231562 + ... + 2231591.

It is an arithmetic number, because the mean of its divisors is an integer number (13389462).

Almost surely, 2^66947295 is an apocalyptic number.

66947295 is a deficient number, since it is larger than the sum of its proper divisors (40168401).

66947295 is a wasteful number, since it uses less digits than its factorization.

66947295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4463161.

The product of its digits is 816480, while the sum is 48.

The square root of 66947295 is about 8182.1326681984. The cubic root of 66947295 is about 406.0482826576.

The spelling of 66947295 in words is "sixty-six million, nine hundred forty-seven thousand, two hundred ninety-five".