66946097 has 8 divisors (see below), whose sum is σ = 68258280. Its totient is φ = 65640960.

The previous prime is 66946093. The next prime is 66946127. The reversal of 66946097 is 79064966.

It can be written as a sum of positive squares in 4 ways, for example, as 1157776 + 65788321 = 1076^2 + 8111^2 .

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 66946097 - 2² = 66946093 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66946093) 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, 19979 + ... + 23087.

It is an arithmetic number, because the mean of its divisors is an integer number (8532285).

Almost surely, 2^66946097 is an apocalyptic number.

It is an amenable number.

66946097 is a deficient number, since it is larger than the sum of its proper divisors (1312183).

66946097 is a wasteful number, since it uses less digits than its factorization.

66946097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3523.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 66946097 is about 8182.0594595737. The cubic root of 66946097 is about 406.0458606094.

The spelling of 66946097 in words is "sixty-six million, nine hundred forty-six thousand, ninety-seven".