84678453 has 32 divisors (see below), whose sum is σ = 131200000. Its totient is φ = 54587520.

The previous prime is 84678449. The next prime is 84678457. The reversal of 84678453 is 35487648.

It is an interprime number because it is at equal distance from previous prime (84678449) and next prime (84678457).

It is not a de Polignac number, because 84678453 - 2² = 84678449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84678399 and 84678408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84678457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67173 + ... + 68421.

It is an arithmetic number, because the mean of its divisors is an integer number (4100000).

Almost surely, 2^84678453 is an apocalyptic number.

It is an amenable number.

84678453 is a deficient number, since it is larger than the sum of its proper divisors (46521547).

84678453 is an equidigital number, since it uses as much as digits as its factorization.

84678453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301 (or 1283 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 84678453 is about 9202.0895996507. The cubic root of 84678453 is about 439.1278402008.

The spelling of 84678453 in words is "eighty-four million, six hundred seventy-eight thousand, four hundred fifty-three".