67654040 has 64 divisors (see below), whose sum is σ = 160220160. Its totient is φ = 25660800.

The previous prime is 67654031. The next prime is 67654051. The reversal of 67654040 is 4045676.

It is a junction number, because it is equal to n+sod(n) for n = 67653988 and 67654006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138677 + ... + 139163.

It is an arithmetic number, because the mean of its divisors is an integer number (2503440).

Almost surely, 2^67654040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67654040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80110080).

67654040 is an abundant number, since it is smaller than the sum of its proper divisors (92566120).

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

67654040 is a wasteful number, since it uses less digits than its factorization.

67654040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 67654040 is about 8225.2075961644. The cubic root of 67654040 is about 407.4721322857.

The spelling of 67654040 in words is "sixty-seven million, six hundred fifty-four thousand, forty".