84348721 has 8 divisors (see below), whose sum is σ = 85117760. Its totient is φ = 83582928.

The previous prime is 84348703. The next prime is 84348739. The reversal of 84348721 is 12784348.

It is an interprime number because it is at equal distance from previous prime (84348703) and next prime (84348739).

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 84348721 - 2⁵ = 84348689 is a prime.

It is a super-2 number, since 2×84348721² = 14229413468671682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84346721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113770 + ... + 114508.

It is an arithmetic number, because the mean of its divisors is an integer number (10639720).

Almost surely, 2^84348721 is an apocalyptic number.

It is an amenable number.

84348721 is a deficient number, since it is larger than the sum of its proper divisors (769039).

84348721 is a wasteful number, since it uses less digits than its factorization.

84348721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623.

The product of its digits is 43008, while the sum is 37.

The square root of 84348721 is about 9184.1559764629. The cubic root of 84348721 is about 438.5571210336.

The spelling of 84348721 in words is "eighty-four million, three hundred forty-eight thousand, seven hundred twenty-one".