68494740 has 48 divisors (see below), whose sum is σ = 192393600. Its totient is φ = 18207360.

The previous prime is 68494739. The next prime is 68494747. The reversal of 68494740 is 4749486.

It is a junction number, because it is equal to n+sod(n) for n = 68494692 and 68494701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68494747) 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, 19305 + ... + 22575.

It is an arithmetic number, because the mean of its divisors is an integer number (4008200).

Almost surely, 2^68494740 is an apocalyptic number.

68494740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68494740 is an abundant number, since it is smaller than the sum of its proper divisors (123898860).

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

68494740 is a wasteful number, since it uses less digits than its factorization.

68494740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3632 (or 3630 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 68494740 is about 8276.1549043019. The cubic root of 68494740 is about 409.1530005865.

The spelling of 68494740 in words is "sixty-eight million, four hundred ninety-four thousand, seven hundred forty".