7880998 has 4 divisors (see below), whose sum is σ = 11821500. Its totient is φ = 3940498.

The previous prime is 7880989. The next prime is 7881023. The reversal of 7880998 is 8990887.

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

It is a super-2 number, since 2×7880998² = 124220258952008, which contains 22 as substring.

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, 1970248 + ... + 1970251.

It is an arithmetic number, because the mean of its divisors is an integer number (2955375).

Almost surely, 2^7880998 is an apocalyptic number.

7880998 is a deficient number, since it is larger than the sum of its proper divisors (3940502).

7880998 is a wasteful number, since it uses less digits than its factorization.

7880998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940501.

The product of its (nonzero) digits is 290304, while the sum is 49.

The square root of 7880998 is about 2807.3115252854. The cubic root of 7880998 is about 199.0033584444.

The spelling of 7880998 in words is "seven million, eight hundred eighty thousand, nine hundred ninety-eight".