66693097 has 4 divisors (see below), whose sum is σ = 70203280. Its totient is φ = 63182916.

The previous prime is 66693071. The next prime is 66693103. The reversal of 66693097 is 79039666.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79039666 = 2 ⋅39519833.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66693097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66690097) 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, 1755063 + ... + 1755100.

It is an arithmetic number, because the mean of its divisors is an integer number (17550820).

Almost surely, 2^66693097 is an apocalyptic number.

It is an amenable number.

66693097 is a deficient number, since it is larger than the sum of its proper divisors (3510183).

66693097 is a wasteful number, since it uses less digits than its factorization.

66693097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510182.

The product of its (nonzero) digits is 367416, while the sum is 46.

The square root of 66693097 is about 8166.5841696513. The cubic root of 66693097 is about 405.5337108338.

The spelling of 66693097 in words is "sixty-six million, six hundred ninety-three thousand, ninety-seven".