84210623 has 4 divisors (see below), whose sum is σ = 96240720. Its totient is φ = 72180528.

The previous prime is 84210611. The next prime is 84210629. The reversal of 84210623 is 32601248.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-84210623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84210592 and 84210601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84210629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6015038 + ... + 6015051.

It is an arithmetic number, because the mean of its divisors is an integer number (24060180).

Almost surely, 2^84210623 is an apocalyptic number.

84210623 is a deficient number, since it is larger than the sum of its proper divisors (12030097).

84210623 is a wasteful number, since it uses less digits than its factorization.

84210623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12030096.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 84210623 is about 9176.6346227797. The cubic root of 84210623 is about 438.3176511166.

The spelling of 84210623 in words is "eighty-four million, two hundred ten thousand, six hundred twenty-three".