67284961 has 4 divisors (see below), whose sum is σ = 67320000. Its totient is φ = 67249924.

The previous prime is 67284949. The next prime is 67284967. The reversal of 67284961 is 16948276.

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 67284961 - 2⁹ = 67284449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67284967) 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, 14461 + ... + 18538.

It is an arithmetic number, because the mean of its divisors is an integer number (16830000).

Almost surely, 2^67284961 is an apocalyptic number.

It is an amenable number.

67284961 is a deficient number, since it is larger than the sum of its proper divisors (35039).

67284961 is a wasteful number, since it uses less digits than its factorization.

67284961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35038.

The product of its digits is 145152, while the sum is 43.

The square root of 67284961 is about 8202.7410662534. The cubic root of 67284961 is about 406.7298079718.

The spelling of 67284961 in words is "sixty-seven million, two hundred eighty-four thousand, nine hundred sixty-one".