7798401 has 12 divisors (see below), whose sum is σ = 12131028. Its totient is φ = 4798944.

The previous prime is 7798397. The next prime is 7798411. The reversal of 7798401 is 1048977.

It can be written as a sum of positive squares in 2 ways, for example, as 378225 + 7420176 = 615^2 + 2724^2 .

It is not a de Polignac number, because 7798401 - 2² = 7798397 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7798411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33210 + ... + 33443.

It is an arithmetic number, because the mean of its divisors is an integer number (1010919).

Almost surely, 2^7798401 is an apocalyptic number.

It is an amenable number.

7798401 is a deficient number, since it is larger than the sum of its proper divisors (4332627).

7798401 is a wasteful number, since it uses less digits than its factorization.

7798401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66672 (or 66669 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 7798401 is about 2792.5617271602. The cubic root of 7798401 is about 198.3056955266.

It can be divided in two parts, 779 and 8401, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 7798401 in words is "seven million, seven hundred ninety-eight thousand, four hundred one".