66430061 has 8 divisors (see below), whose sum is σ = 70108800. Its totient is φ = 62769600.

The previous prime is 66430057. The next prime is 66430079. The reversal of 66430061 is 16003466.

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 66430061 - 2² = 66430057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66430061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66430081) 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, 3260 + ... + 11978.

It is an arithmetic number, because the mean of its divisors is an integer number (8763600).

Almost surely, 2^66430061 is an apocalyptic number.

It is an amenable number.

66430061 is a deficient number, since it is larger than the sum of its proper divisors (3678739).

66430061 is a wasteful number, since it uses less digits than its factorization.

66430061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9139.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 66430061 is about 8150.4638518308. The cubic root of 66430061 is about 404.9998699385. Note that the first 3 decimals are identical.

The spelling of 66430061 in words is "sixty-six million, four hundred thirty thousand, sixty-one".