68569740 has 84 divisors (see below), whose sum is σ = 215941824. Its totient is φ = 18281376.

The previous prime is 68569691. The next prime is 68569747. The reversal of 68569740 is 4796586.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (68569747) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 12229 + ... + 16931.

It is an arithmetic number, because the mean of its divisors is an integer number (2570736).

Almost surely, 2^68569740 is an apocalyptic number.

68569740 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 68569740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107970912).

68569740 is an abundant number, since it is smaller than the sum of its proper divisors (147372084).

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

68569740 is a wasteful number, since it uses less digits than its factorization.

68569740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4730 (or 4713 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 68569740 is about 8280.6847542942. The cubic root of 68569740 is about 409.3022834928.

The spelling of 68569740 in words is "sixty-eight million, five hundred sixty-nine thousand, seven hundred forty".