84101620 has 12 divisors (see below), whose sum is σ = 176613444. Its totient is φ = 33640640.

The previous prime is 84101617. The next prime is 84101651. The reversal of 84101620 is 2610148.

It can be written as a sum of positive squares in 2 ways, for example, as 19749136 + 64352484 = 4444^2 + 8022^2 .

It is a junction number, because it is equal to n+sod(n) for n = 84101591 and 84101600.

It is a congruent number.

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, 2102521 + ... + 2102560.

It is an arithmetic number, because the mean of its divisors is an integer number (14717787).

Almost surely, 2^84101620 is an apocalyptic number.

It is an amenable number.

84101620 is an abundant number, since it is smaller than the sum of its proper divisors (92511824).

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

84101620 is a wasteful number, since it uses less digits than its factorization.

84101620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205090 (or 4205088 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 84101620 is about 9170.6935397493. The cubic root of 84101620 is about 438.1284486668.

Adding to 84101620 its reverse (2610148), we get a palindrome (86711768).

The spelling of 84101620 in words is "eighty-four million, one hundred one thousand, six hundred twenty".