84350561 has 8 divisors (see below), whose sum is σ = 85333824. Its totient is φ = 83371120.

The previous prime is 84350527. The next prime is 84350569. The reversal of 84350561 is 16505348.

84350561 = T₅₄ + T₅₅ + ... + T₇₉₆.

It is a happy number.

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

It is a 3-Lehmer number, since φ(84350561) divides (84350561-1)³.

It is a cyclic number.

It is a Carmichael number.

It is a de Polignac number, because none of the positive numbers 2^k-84350561 is a prime.

It is a deceptive number, since it divides R_84350560.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84350569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78971 + ... + 80031.

It is an arithmetic number, because the mean of its divisors is an integer number (10666728).

It is a Poulet number, since it divides 2^84350560-1.

Almost surely, 2^84350561 is an apocalyptic number.

It is an amenable number.

84350561 is a deficient number, since it is larger than the sum of its proper divisors (983263).

84350561 is a wasteful number, since it uses less digits than its factorization.

84350561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 84350561 is about 9184.2561484314. The cubic root of 84350561 is about 438.5603099349.

The spelling of 84350561 in words is "eighty-four million, three hundred fifty thousand, five hundred sixty-one".