67406730 has 32 divisors (see below), whose sum is σ = 167356800. Its totient is φ = 17355072.

The previous prime is 67406723. The next prime is 67406771. The reversal of 67406730 is 3760476.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 67406691 and 67406700.

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, 37870 + ... + 39609.

It is an arithmetic number, because the mean of its divisors is an integer number (5229900).

Almost surely, 2^67406730 is an apocalyptic number.

67406730 is an abundant number, since it is smaller than the sum of its proper divisors (99950070).

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

67406730 is a wasteful number, since it uses less digits than its factorization.

67406730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77518.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 67406730 is about 8210.1601689614. The cubic root of 67406730 is about 406.9750199480.

The spelling of 67406730 in words is "sixty-seven million, four hundred six thousand, seven hundred thirty".