84661970 has 16 divisors (see below), whose sum is σ = 152700120. Its totient is φ = 33796224.

The previous prime is 84661939. The next prime is 84662059. The reversal of 84661970 is 7916648.

It can be written as a sum of positive squares in 4 ways, for example, as 65626201 + 19035769 = 8101^2 + 4363^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3227 + ... + 13406.

Almost surely, 2^84661970 is an apocalyptic number.

84661970 is a deficient number, since it is larger than the sum of its proper divisors (68038150).

84661970 is a wasteful number, since it uses less digits than its factorization.

84661970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17149.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 84661970 is about 9201.1939442661. The cubic root of 84661970 is about 439.0993456876.

The spelling of 84661970 in words is "eighty-four million, six hundred sixty-one thousand, nine hundred seventy".