84969720 has 192 divisors, whose sum is σ = 308880000. Its totient is φ = 20079360.

The previous prime is 84969713. The next prime is 84969733. The reversal of 84969720 is 2796948.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 170031 + ... + 170529.

It is an arithmetic number, because the mean of its divisors is an integer number (1608750).

Almost surely, 2^84969720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84969720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154440000).

84969720 is an abundant number, since it is smaller than the sum of its proper divisors (223910280).

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

84969720 is a wasteful number, since it uses less digits than its factorization.

84969720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 84969720 is about 9217.9021474520. The cubic root of 84969720 is about 439.6307508178.

The spelling of 84969720 in words is "eighty-four million, nine hundred sixty-nine thousand, seven hundred twenty".