84321745 has 8 divisors (see below), whose sum is σ = 101572416. Its totient is φ = 67199856.

The previous prime is 84321739. The next prime is 84321761. The reversal of 84321745 is 54712348.

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

It is a cyclic number.

It is not a de Polignac number, because 84321745 - 2³ = 84321737 is a prime.

It is a super-2 number, since 2×84321745² = 14220313359690050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84321745.

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, 30747 + ... + 33376.

It is an arithmetic number, because the mean of its divisors is an integer number (12696552).

Almost surely, 2^84321745 is an apocalyptic number.

It is an amenable number.

84321745 is a deficient number, since it is larger than the sum of its proper divisors (17250671).

84321745 is a wasteful number, since it uses less digits than its factorization.

84321745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64391.

The product of its digits is 26880, while the sum is 34.

The square root of 84321745 is about 9182.6872428500. The cubic root of 84321745 is about 438.5103636429.

The spelling of 84321745 in words is "eighty-four million, three hundred twenty-one thousand, seven hundred forty-five".