66880335 has 16 divisors (see below), whose sum is σ = 108823680. Its totient is φ = 35064480.

The previous prime is 66880313. The next prime is 66880357. The reversal of 66880335 is 53308866.

It is an interprime number because it is at equal distance from previous prime (66880313) and next prime (66880357).

It is not a de Polignac number, because 66880335 - 2¹⁰ = 66879311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66880293 and 66880302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36901 + ... + 38670.

It is an arithmetic number, because the mean of its divisors is an integer number (6801480).

Almost surely, 2^66880335 is an apocalyptic number.

66880335 is a deficient number, since it is larger than the sum of its proper divisors (41943345).

66880335 is a wasteful number, since it uses less digits than its factorization.

66880335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75638.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 66880335 is about 8178.0398018107. The cubic root of 66880335 is about 405.9128623853.

It can be divided in two parts, 668 and 80335, that added together give a triangular number (81003 = T₄₀₂).

The spelling of 66880335 in words is "sixty-six million, eight hundred eighty thousand, three hundred thirty-five".