40685568 has 208 divisors, whose sum is σ = 138395136. Its totient is φ = 10321920.

The previous prime is 40685543. The next prime is 40685569. The reversal of 40685568 is 86558604.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40685569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 946155 + ... + 946197.

Almost surely, 2^40685568 is an apocalyptic number.

40685568 is a gapful number since it is divisible by the number (48) 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 40685568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69197568).

40685568 is an abundant number, since it is smaller than the sum of its proper divisors (97709568).

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

40685568 is a wasteful number, since it uses less digits than its factorization.

40685568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 40685568 is about 6378.5239671886. The cubic root of 40685568 is about 343.9379733128.

The spelling of 40685568 in words is "forty million, six hundred eighty-five thousand, five hundred sixty-eight".