68071620 has 48 divisors (see below), whose sum is σ = 192911040. Its totient is φ = 17932416.

The previous prime is 68071609. The next prime is 68071631. The reversal of 68071620 is 2617086.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68071609) and next prime (68071631).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1855 + ... + 11814.

It is an arithmetic number, because the mean of its divisors is an integer number (4018980).

Almost surely, 2^68071620 is an apocalyptic number.

68071620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68071620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96455520).

68071620 is an abundant number, since it is smaller than the sum of its proper divisors (124839420).

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

68071620 is a wasteful number, since it uses less digits than its factorization.

68071620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13764 (or 13762 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 68071620 is about 8250.5527087584. The cubic root of 68071620 is about 408.3087580193.

The spelling of 68071620 in words is "sixty-eight million, seventy-one thousand, six hundred twenty".