67542261 has 8 divisors (see below), whose sum is σ = 90453984. Its totient is φ = 44829360.

The previous prime is 67542257. The next prime is 67542263. The reversal of 67542261 is 16224576.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67542261 - 2² = 67542257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67542263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48910 + ... + 50271.

It is an arithmetic number, because the mean of its divisors is an integer number (11306748).

Almost surely, 2^67542261 is an apocalyptic number.

It is an amenable number.

67542261 is a deficient number, since it is larger than the sum of its proper divisors (22911723).

67542261 is a wasteful number, since it uses less digits than its factorization.

67542261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99411.

The product of its digits is 20160, while the sum is 33.

The square root of 67542261 is about 8218.4098826963. The cubic root of 67542261 is about 407.2475980973.

The spelling of 67542261 in words is "sixty-seven million, five hundred forty-two thousand, two hundred sixty-one".