67406740 has 48 divisors (see below), whose sum is σ = 144969552. Its totient is φ = 26320896.

The previous prime is 67406723. The next prime is 67406771. The reversal of 67406740 is 4760476.

It can be written as a sum of positive squares in 8 ways, for example, as 853776 + 66552964 = 924^2 + 8158^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67406696 and 67406705.

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, 199852 + ... + 200188.

It is an arithmetic number, because the mean of its divisors is an integer number (3020199).

Almost surely, 2^67406740 is an apocalyptic number.

It is an amenable number.

67406740 is an abundant number, since it is smaller than the sum of its proper divisors (77562812).

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

67406740 is a wasteful number, since it uses less digits than its factorization.

67406740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 67406740 is about 8210.1607779629. The cubic root of 67406740 is about 406.9750400734.

The spelling of 67406740 in words is "sixty-seven million, four hundred six thousand, seven hundred forty".