7066478 has 4 divisors (see below), whose sum is σ = 10599720. Its totient is φ = 3533238.

The previous prime is 7066469. The next prime is 7066483. The reversal of 7066478 is 8746607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8746607 = 61 ⋅143387.

It is a super-2 number, since 2×7066478² = 99870222648968, which contains 22 as substring.

It is a Curzon number.

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, 1766618 + ... + 1766621.

It is an arithmetic number, because the mean of its divisors is an integer number (2649930).

Almost surely, 2^7066478 is an apocalyptic number.

7066478 is a deficient number, since it is larger than the sum of its proper divisors (3533242).

7066478 is a wasteful number, since it uses less digits than its factorization.

7066478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533241.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 7066478 is about 2658.2847853456. The cubic root of 7066478 is about 191.8967724907.

The spelling of 7066478 in words is "seven million, sixty-six thousand, four hundred seventy-eight".