81367006 has 32 divisors (see below), whose sum is σ = 148181760. Its totient is φ = 32731776.

The previous prime is 81367003. The next prime is 81367009. The reversal of 81367006 is 60076318.

It is an interprime number because it is at equal distance from previous prime (81367003) and next prime (81367009).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81367003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28705 + ... + 31411.

It is an arithmetic number, because the mean of its divisors is an integer number (4630680).

Almost surely, 2^81367006 is an apocalyptic number.

81367006 is a deficient number, since it is larger than the sum of its proper divisors (66814754).

81367006 is a wasteful number, since it uses less digits than its factorization.

81367006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 81367006 is about 9020.3661788200. The cubic root of 81367006 is about 433.3273609959.

The spelling of 81367006 in words is "eighty-one million, three hundred sixty-seven thousand, six".