68495040 has 168 divisors, whose sum is σ = 249631200. Its totient is φ = 17178624.

The previous prime is 68495039. The next prime is 68495041. The reversal of 68495040 is 4059486.

It is an interprime number because it is at equal distance from previous prime (68495039) and next prime (68495041).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 68494986 and 68495004.

It is not an unprimeable number, because it can be changed into a prime (68495041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48261 + ... + 49659.

It is an arithmetic number, because the mean of its divisors is an integer number (1485900).

Almost surely, 2^68495040 is an apocalyptic number.

68495040 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 68495040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124815600).

68495040 is an abundant number, since it is smaller than the sum of its proper divisors (181136160).

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

68495040 is a wasteful number, since it uses less digits than its factorization.

68495040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439 (or 1426 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 68495040 is about 8276.1730286407. The cubic root of 68495040 is about 409.1535979352.

The spelling of 68495040 in words is "sixty-eight million, four hundred ninety-five thousand, forty".