68420000 has 120 divisors (see below), whose sum is σ = 184216032. Its totient is φ = 24800000.

The previous prime is 68419997. The next prime is 68420003. The reversal of 68420000 is 2486.

It is an interprime number because it is at equal distance from previous prime (68419997) and next prime (68420003).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (68420003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 219845 + ... + 220155.

Almost surely, 2^68420000 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 68420000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92108016).

68420000 is an abundant number, since it is smaller than the sum of its proper divisors (115796032).

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

68420000 is a wasteful number, since it uses less digits than its factorization.

68420000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 68420000 is about 8271.6382899641. The cubic root of 68420000 is about 409.0041267470.

Adding to 68420000 its reverse (2486), we get a palindrome (68422486).

The spelling of 68420000 in words is "sixty-eight million, four hundred twenty thousand".