84420712 has 16 divisors (see below), whose sum is σ = 158386500. Its totient is φ = 42184320.

The previous prime is 84420701. The next prime is 84420731. The reversal of 84420712 is 21702448.

It can be written as a sum of positive squares in 2 ways, for example, as 72352036 + 12068676 = 8506^2 + 3474^2 .

It is a super-2 number, since 2×84420712² = 14253713229173888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22662 + ... + 26122.

Almost surely, 2^84420712 is an apocalyptic number.

It is an amenable number.

84420712 is a deficient number, since it is larger than the sum of its proper divisors (73965788).

84420712 is a wasteful number, since it uses less digits than its factorization.

84420712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6516 (or 6512 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 84420712 is about 9188.0744446266. The cubic root of 84420712 is about 438.6818539573.

The spelling of 84420712 in words is "eighty-four million, four hundred twenty thousand, seven hundred twelve".