84780106 has 16 divisors (see below), whose sum is σ = 129859200. Its totient is φ = 41502160.

The previous prime is 84780103. The next prime is 84780167. The reversal of 84780106 is 60108748.

It is a happy number.

84780106 is nontrivially palindromic in base 3.

It is not an unprimeable number, because it can be changed into a prime (84780103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19155 + ... + 23161.

It is an arithmetic number, because the mean of its divisors is an integer number (8116200).

Almost surely, 2^84780106 is an apocalyptic number.

84780106 is a deficient number, since it is larger than the sum of its proper divisors (45079094).

84780106 is a wasteful number, since it uses less digits than its factorization.

84780106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4229.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 84780106 is about 9207.6113080429. The cubic root of 84780106 is about 439.3034882371.

It can be divided in two parts, 84780 and 106, that multiplied together give a triangular number (8986680 = T₄₂₃₉).

The spelling of 84780106 in words is "eighty-four million, seven hundred eighty thousand, one hundred six".