66960355 has 16 divisors (see below), whose sum is σ = 100180224. Its totient is φ = 41741280.

The previous prime is 66960353. The next prime is 66960367. The reversal of 66960355 is 55306966.

It is not a de Polignac number, because 66960355 - 2¹ = 66960353 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (66960353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86577 + ... + 87346.

It is an arithmetic number, because the mean of its divisors is an integer number (6261264).

Almost surely, 2^66960355 is an apocalyptic number.

66960355 is a deficient number, since it is larger than the sum of its proper divisors (33219869).

66960355 is a wasteful number, since it uses less digits than its factorization.

66960355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173946.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 66960355 is about 8182.9307097152. The cubic root of 66960355 is about 406.0746847489.

The spelling of 66960355 in words is "sixty-six million, nine hundred sixty thousand, three hundred fifty-five".