84678466 has 4 divisors (see below), whose sum is σ = 127017702. Its totient is φ = 42339232.

The previous prime is 84678457. The next prime is 84678469. The reversal of 84678466 is 66487648.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48930025 + 35748441 = 6995^2 + 5979^2 .

It is a super-2 number, since 2×84678466² = 14340885208226312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84678469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21169615 + ... + 21169618.

Almost surely, 2^84678466 is an apocalyptic number.

84678466 is a deficient number, since it is larger than the sum of its proper divisors (42339236).

84678466 is a wasteful number, since it uses less digits than its factorization.

84678466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42339235.

The product of its digits is 1548288, while the sum is 49.

The square root of 84678466 is about 9202.0903060120. The cubic root of 84678466 is about 439.1278626727.

The spelling of 84678466 in words is "eighty-four million, six hundred seventy-eight thousand, four hundred sixty-six".