68870523420 has 288 divisors, whose sum is σ = 225480423168. Its totient is φ = 16952702976.

The previous prime is 68870523367. The next prime is 68870523431. The reversal of 68870523420 is 2432507886.

68870523420 is a `hidden beast` number, since 6 + 8 + 87 + 0 + 523 + 42 + 0 = 666.

It is a super-2 number, since 2×68870523420² (a number of 22 digits) contains 22 as substring.

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 95 ways as a sum of consecutive naturals, for example, 58020067 + ... + 58021253.

It is an arithmetic number, because the mean of its divisors is an integer number (782918136).

Almost surely, 2^68870523420 is an apocalyptic number.

68870523420 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 68870523420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112740211584).

68870523420 is an abundant number, since it is smaller than the sum of its proper divisors (156609899748).

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

68870523420 is a wasteful number, since it uses less digits than its factorization.

68870523420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569 (or 1564 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 68870523420 in words is "sixty-eight billion, eight hundred seventy million, five hundred twenty-three thousand, four hundred twenty".