66697301 has 4 divisors (see below), whose sum is σ = 72760704. Its totient is φ = 60633900.

The previous prime is 66697291. The next prime is 66697313. The reversal of 66697301 is 10379666.

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 66697301 - 2⁶ = 66697237 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 (66697321) 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, 3031685 + ... + 3031706.

It is an arithmetic number, because the mean of its divisors is an integer number (18190176).

Almost surely, 2^66697301 is an apocalyptic number.

It is an amenable number.

66697301 is a deficient number, since it is larger than the sum of its proper divisors (6063403).

66697301 is a wasteful number, since it uses less digits than its factorization.

66697301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6063402.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 66697301 is about 8166.8415559505. The cubic root of 66697301 is about 405.5422315952.

The spelling of 66697301 in words is "sixty-six million, six hundred ninety-seven thousand, three hundred one".