7820006 has 4 divisors (see below), whose sum is σ = 11730012. Its totient is φ = 3910002.

The previous prime is 7820003. The next prime is 7820063. The reversal of 7820006 is 6000287.

7820006 is nontrivially palindromic in base 12.

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

It is a super-2 number, since 2×7820006² = 122304987680072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7820003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1955000 + ... + 1955003.

It is an arithmetic number, because the mean of its divisors is an integer number (2932503).

Almost surely, 2^7820006 is an apocalyptic number.

7820006 is a deficient number, since it is larger than the sum of its proper divisors (3910006).

7820006 is a wasteful number, since it uses less digits than its factorization.

7820006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910005.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 7820006 is about 2796.4273636195. The cubic root of 7820006 is about 198.4886579945.

The spelling of 7820006 in words is "seven million, eight hundred twenty thousand, six".