67306361 has 4 divisors (see below), whose sum is σ = 69627300. Its totient is φ = 64985424.

The previous prime is 67306357. The next prime is 67306381. The reversal of 67306361 is 16360376.

It is a happy number.

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 19971961 + 47334400 = 4469^2 + 6880^2 .

It is a cyclic number.

It is not a de Polignac number, because 67306361 - 2² = 67306357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67306321) 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, 1160426 + ... + 1160483.

It is an arithmetic number, because the mean of its divisors is an integer number (17406825).

Almost surely, 2^67306361 is an apocalyptic number.

It is an amenable number.

67306361 is a deficient number, since it is larger than the sum of its proper divisors (2320939).

67306361 is a wasteful number, since it uses less digits than its factorization.

67306361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320938.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 67306361 is about 8204.0454045550. The cubic root of 67306361 is about 406.7729235762.

The spelling of 67306361 in words is "sixty-seven million, three hundred six thousand, three hundred sixty-one".