68535780 has 24 divisors (see below), whose sum is σ = 191900352. Its totient is φ = 18276192.

The previous prime is 68535773. The next prime is 68535781. The reversal of 68535780 is 8753586.

It is not an unprimeable number, because it can be changed into a prime (68535781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571072 + ... + 571191.

It is an arithmetic number, because the mean of its divisors is an integer number (7995848).

Almost surely, 2^68535780 is an apocalyptic number.

68535780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68535780 is an abundant number, since it is smaller than the sum of its proper divisors (123364572).

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

68535780 is a wasteful number, since it uses less digits than its factorization.

68535780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142275 (or 1142273 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 68535780 is about 8278.6339452835. The cubic root of 68535780 is about 409.2347016854.

The spelling of 68535780 in words is "sixty-eight million, five hundred thirty-five thousand, seven hundred eighty".