84661400 has 24 divisors (see below), whose sum is σ = 196838220. Its totient is φ = 33864480.

The previous prime is 84661391. The next prime is 84661427. The reversal of 84661400 is 416648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 211454 + ... + 211853.

Almost surely, 2^84661400 is an apocalyptic number.

It is an amenable number.

84661400 is an abundant number, since it is smaller than the sum of its proper divisors (112176820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84661400 is a wasteful number, since it uses less digits than its factorization.

84661400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423323 (or 423314 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 84661400 is about 9201.1629699729. The cubic root of 84661400 is about 439.0983602503.

The spelling of 84661400 in words is "eighty-four million, six hundred sixty-one thousand, four hundred".