66354873 has 16 divisors (see below), whose sum is σ = 96175296. Its totient is φ = 40449600.

The previous prime is 66354863. The next prime is 66354877. The reversal of 66354873 is 37845366.

It is not a de Polignac number, because 66354873 - 2¹⁰ = 66353849 is a prime.

It is a super-2 number, since 2×66354873² = 8805938341692258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66354877) 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, 3778 + ... + 12123.

It is an arithmetic number, because the mean of its divisors is an integer number (6010956).

Almost surely, 2^66354873 is an apocalyptic number.

It is an amenable number.

66354873 is a deficient number, since it is larger than the sum of its proper divisors (29820423).

66354873 is a wasteful number, since it uses less digits than its factorization.

66354873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16024.

The product of its digits is 362880, while the sum is 42.

The square root of 66354873 is about 8145.8500477237. The cubic root of 66354873 is about 404.8470143108.

The spelling of 66354873 in words is "sixty-six million, three hundred fifty-four thousand, eight hundred seventy-three".