6453998 has 4 divisors (see below), whose sum is σ = 9681000. Its totient is φ = 3226998.

The previous prime is 6453989. The next prime is 6454009. The reversal of 6453998 is 8993546.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1613498 + ... + 1613501.

It is an arithmetic number, because the mean of its divisors is an integer number (2420250).

Almost surely, 2^6453998 is an apocalyptic number.

6453998 is a deficient number, since it is larger than the sum of its proper divisors (3227002).

6453998 is a wasteful number, since it uses less digits than its factorization.

6453998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227001.

The product of its digits is 233280, while the sum is 44.

The square root of 6453998 is about 2540.4720033883. The cubic root of 6453998 is about 186.1842510744.

The spelling of 6453998 in words is "six million, four hundred fifty-three thousand, nine hundred ninety-eight".