670551026 has 8 divisors (see below), whose sum is σ = 1064992860. Its totient is φ = 315553408.

The previous prime is 670550999. The next prime is 670551029. The reversal of 670551026 is 620155076.

It is a happy number.

It is a Cunningham number, because it is equal to 25895²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 670551025 + 1 = 25895^2 + 1^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 670550983 and 670551001.

It is not an unprimeable number, because it can be changed into a prime (670551029) 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, 9861011 + ... + 9861078.

Almost surely, 2^670551026 is an apocalyptic number.

670551026 is a deficient number, since it is larger than the sum of its proper divisors (394441834).

670551026 is a wasteful number, since it uses less digits than its factorization.

670551026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19722108.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 670551026 is about 25895.0000193087. Note that the first 4 decimals coincide. The cubic root of 670551026 is about 875.2738303777.

The spelling of 670551026 in words is "six hundred seventy million, five hundred fifty-one thousand, twenty-six".