67409057 has 8 divisors (see below), whose sum is σ = 69050880. Its totient is φ = 65781040.

The previous prime is 67409053. The next prime is 67409081. The reversal of 67409057 is 75090476.

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

It is a cyclic number.

It is not a de Polignac number, because 67409057 - 2² = 67409053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67409057.

It is not an unprimeable number, because it can be changed into a prime (67409051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6794 + ... + 13452.

It is an arithmetic number, because the mean of its divisors is an integer number (8631360).

Almost surely, 2^67409057 is an apocalyptic number.

It is an amenable number.

67409057 is a deficient number, since it is larger than the sum of its proper divisors (1641823).

67409057 is a wasteful number, since it uses less digits than its factorization.

67409057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6903.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 67409057 is about 8210.3018823914. The cubic root of 67409057 is about 406.9797030609.

The spelling of 67409057 in words is "sixty-seven million, four hundred nine thousand, fifty-seven".