81360235 has 8 divisors (see below), whose sum is σ = 106508016. Its totient is φ = 59171040.

The previous prime is 81360221. The next prime is 81360241. The reversal of 81360235 is 53206318.

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

It is not a de Polignac number, because 81360235 - 2¹¹ = 81358187 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739584 + ... + 739693.

It is an arithmetic number, because the mean of its divisors is an integer number (13313502).

Almost surely, 2^81360235 is an apocalyptic number.

81360235 is a deficient number, since it is larger than the sum of its proper divisors (25147781).

81360235 is a wasteful number, since it uses less digits than its factorization.

81360235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479293.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 81360235 is about 9019.9908536539. The cubic root of 81360235 is about 433.3153408045.

The spelling of 81360235 in words is "eighty-one million, three hundred sixty thousand, two hundred thirty-five".