67405745 has 8 divisors (see below), whose sum is σ = 88240320. Its totient is φ = 49022320.

The previous prime is 67405739. The next prime is 67405753. The reversal of 67405745 is 54750476.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67405745 - 2²² = 63211441 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 67405699 and 67405708.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 612725 + ... + 612834.

It is an arithmetic number, because the mean of its divisors is an integer number (11030040).

Almost surely, 2^67405745 is an apocalyptic number.

It is an amenable number.

67405745 is a deficient number, since it is larger than the sum of its proper divisors (20834575).

67405745 is a wasteful number, since it uses less digits than its factorization.

67405745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225575.

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 67405745 is about 8210.1001820928. The cubic root of 67405745 is about 406.9730375923.

The spelling of 67405745 in words is "sixty-seven million, four hundred five thousand, seven hundred forty-five".