7451998 has 8 divisors (see below), whose sum is σ = 11193840. Its totient is φ = 3720720.

The previous prime is 7451993. The next prime is 7452007. The reversal of 7451998 is 8991547.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7451993) 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, 543 + ... + 3898.

It is an arithmetic number, because the mean of its divisors is an integer number (1399230).

Almost surely, 2^7451998 is an apocalyptic number.

7451998 is a deficient number, since it is larger than the sum of its proper divisors (3741842).

7451998 is a wasteful number, since it uses less digits than its factorization.

7451998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5282.

The product of its digits is 90720, while the sum is 43.

The square root of 7451998 is about 2729.8347935360. The cubic root of 7451998 is about 195.3248846717.

The spelling of 7451998 in words is "seven million, four hundred fifty-one thousand, nine hundred ninety-eight".