67372061 has 4 divisors (see below), whose sum is σ = 69015324. Its totient is φ = 65728800.

The previous prime is 67372057. The next prime is 67372087. The reversal of 67372061 is 16027376.

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 22146436 + 45225625 = 4706^2 + 6725^2 .

It is a cyclic number.

It is not a de Polignac number, because 67372061 - 2² = 67372057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67372561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821570 + ... + 821651.

It is an arithmetic number, because the mean of its divisors is an integer number (17253831).

Almost surely, 2^67372061 is an apocalyptic number.

It is an amenable number.

67372061 is a deficient number, since it is larger than the sum of its proper divisors (1643263).

67372061 is a wasteful number, since it uses less digits than its factorization.

67372061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643262.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 67372061 is about 8208.0485500513. The cubic root of 67372061 is about 406.9052354393.

The spelling of 67372061 in words is "sixty-seven million, three hundred seventy-two thousand, sixty-one".