67765361 has 4 divisors (see below), whose sum is σ = 67793472. Its totient is φ = 67737252.

The previous prime is 67765351. The next prime is 67765363. The reversal of 67765361 is 16356776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67765361 - 2¹⁴ = 67748977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67765363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10061 + ... + 15386.

It is an arithmetic number, because the mean of its divisors is an integer number (16948368).

Almost surely, 2^67765361 is an apocalyptic number.

It is an amenable number.

67765361 is a deficient number, since it is larger than the sum of its proper divisors (28111).

67765361 is a wasteful number, since it uses less digits than its factorization.

67765361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28110.

The product of its digits is 158760, while the sum is 41.

The square root of 67765361 is about 8231.9718779889. The cubic root of 67765361 is about 407.6955008075.

The spelling of 67765361 in words is "sixty-seven million, seven hundred sixty-five thousand, three hundred sixty-one".