66607097 has 4 divisors (see below), whose sum is σ = 66675840. Its totient is φ = 66538356.

The previous prime is 66607069. The next prime is 66607109. The reversal of 66607097 is 79070666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66607097 - 2¹⁶ = 66541561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66607007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32897 + ... + 34862.

It is an arithmetic number, because the mean of its divisors is an integer number (16668960).

Almost surely, 2^66607097 is an apocalyptic number.

It is an amenable number.

66607097 is a deficient number, since it is larger than the sum of its proper divisors (68743).

66607097 is an equidigital number, since it uses as much as digits as its factorization.

66607097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68742.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 66607097 is about 8161.3171118392. The cubic root of 66607097 is about 405.3593254669.

The spelling of 66607097 in words is "sixty-six million, six hundred seven thousand, ninety-seven".