67100020 has 144 divisors (see below), whose sum is σ = 173295360. Its totient is φ = 21620736.

The previous prime is 67100017. The next prime is 67100087. The reversal of 67100020 is 2000176.

It is a junction number, because it is equal to n+sod(n) for n = 67099967 and 67100003.

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, 1427637 + ... + 1427683.

It is an arithmetic number, because the mean of its divisors is an integer number (1203440).

Almost surely, 2^67100020 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 67100020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86647680).

67100020 is an abundant number, since it is smaller than the sum of its proper divisors (106195340).

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

67100020 is a wasteful number, since it uses less digits than its factorization.

67100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 67100020 is about 8191.4601872926. The cubic root of 67100020 is about 406.3568170399.

Adding to 67100020 its reverse (2000176), we get a palindrome (69100196).

The spelling of 67100020 in words is "sixty-seven million, one hundred thousand, twenty".