7166426 has 4 divisors (see below), whose sum is σ = 10749642. Its totient is φ = 3583212.

The previous prime is 7166417. The next prime is 7166443. The reversal of 7166426 is 6246617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6246617 = 13 ⋅480509.

It can be written as a sum of positive squares in only one way, i.e., 6528025 + 638401 = 2555^2 + 799^2 .

It is a super-2 number, since 2×7166426² = 102715323226952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7166392 and 7166401.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1791605 + ... + 1791608.

Almost surely, 2^7166426 is an apocalyptic number.

7166426 is a deficient number, since it is larger than the sum of its proper divisors (3583216).

7166426 is a wasteful number, since it uses less digits than its factorization.

7166426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3583215.

The product of its digits is 12096, while the sum is 32.

The square root of 7166426 is about 2677.0181172342. The cubic root of 7166426 is about 192.7972671399.

The spelling of 7166426 in words is "seven million, one hundred sixty-six thousand, four hundred twenty-six".