84280666 has 16 divisors (see below), whose sum is σ = 129810240. Its totient is φ = 41015520.

The previous prime is 84280663. The next prime is 84280687. The reversal of 84280666 is 66608248.

It is a super-2 number, since 2×84280666² = 14206461322807112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84280663) 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, 43915 + ... + 45793.

It is an arithmetic number, because the mean of its divisors is an integer number (8113140).

Almost surely, 2^84280666 is an apocalyptic number.

84280666 is a deficient number, since it is larger than the sum of its proper divisors (45529574).

84280666 is a wasteful number, since it uses less digits than its factorization.

84280666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 84280666 is about 9180.4502068254. The cubic root of 84280666 is about 438.4391424205.

The spelling of 84280666 in words is "eighty-four million, two hundred eighty thousand, six hundred sixty-six".