7980626 has 8 divisors (see below), whose sum is σ = 12383820. Its totient is φ = 3852688.

The previous prime is 7980617. The next prime is 7980629. The reversal of 7980626 is 6260897.

7980626 = 810² + 811² + ... + 821².

It is a Cunningham number, because it is equal to 2825²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 7980625 + 1 = 2825^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 7980626.

It is not an unprimeable number, because it can be changed into a prime (7980629) 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, 68741 + ... + 68856.

Almost surely, 2^7980626 is an apocalyptic number.

7980626 is a deficient number, since it is larger than the sum of its proper divisors (4403194).

7980626 is a wasteful number, since it uses less digits than its factorization.

7980626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137628.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 7980626 is about 2825.0001769911. Note that the first 3 decimals coincide. The cubic root of 7980626 is about 199.8384194939.

The spelling of 7980626 in words is "seven million, nine hundred eighty thousand, six hundred twenty-six".