7608421 has 4 divisors (see below), whose sum is σ = 7814092. Its totient is φ = 7402752.

The previous prime is 7608413. The next prime is 7608427. The reversal of 7608421 is 1248067.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1248067 = 457 ⋅2731.

It can be written as a sum of positive squares in 2 ways, for example, as 4040100 + 3568321 = 2010^2 + 1889^2 .

It is a cyclic number.

It is not a de Polignac number, because 7608421 - 2³ = 7608413 is a prime.

It is a super-2 number, since 2×7608421² = 115776140226482, which contains 22 as substring.

It is a Duffinian number.

7608421 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7608421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7608427) 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, 102780 + ... + 102853.

It is an arithmetic number, because the mean of its divisors is an integer number (1953523).

Almost surely, 2^7608421 is an apocalyptic number.

It is an amenable number.

7608421 is a deficient number, since it is larger than the sum of its proper divisors (205671).

7608421 is a wasteful number, since it uses less digits than its factorization.

7608421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205670.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 7608421 is about 2758.3366364532. The cubic root of 7608421 is about 196.6821038666.

The spelling of 7608421 in words is "seven million, six hundred eight thousand, four hundred twenty-one".