67117045 has 4 divisors (see below), whose sum is σ = 80540460. Its totient is φ = 53693632.

The previous prime is 67117031. The next prime is 67117073. The reversal of 67117045 is 54071176.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40056241 + 27060804 = 6329^2 + 5202^2 .

It is a cyclic number.

It is not a de Polignac number, because 67117045 - 2²¹ = 65019893 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 67116998 and 67117016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6711700 + ... + 6711709.

It is an arithmetic number, because the mean of its divisors is an integer number (20135115).

Almost surely, 2^67117045 is an apocalyptic number.

It is an amenable number.

67117045 is a deficient number, since it is larger than the sum of its proper divisors (13423415).

67117045 is a wasteful number, since it uses less digits than its factorization.

67117045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13423414.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 67117045 is about 8192.4993133964. The cubic root of 67117045 is about 406.3911818572.

The spelling of 67117045 in words is "sixty-seven million, one hundred seventeen thousand, forty-five".