7405998 has 8 divisors (see below), whose sum is σ = 14812008. Its totient is φ = 2468664.

The previous prime is 7405997. The next prime is 7406011. The reversal of 7405998 is 8995047.

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

7405998 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7405997) 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, 617161 + ... + 617172.

It is an arithmetic number, because the mean of its divisors is an integer number (1851501).

Almost surely, 2^7405998 is an apocalyptic number.

7405998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7405998 is a wasteful number, since it uses less digits than its factorization.

7405998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234338.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 7405998 is about 2721.3963327674. The cubic root of 7405998 is about 194.9221516999.

The spelling of 7405998 in words is "seven million, four hundred five thousand, nine hundred ninety-eight".