670680669 has 4 divisors (see below), whose sum is σ = 894240896. Its totient is φ = 447120444.

The previous prime is 670680643. The next prime is 670680683. The reversal of 670680669 is 966086076.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 670680669 - 2²⁸ = 402245213 is a prime.

It is a super-2 number, since 2×670680669² = 899625119540575122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670680469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111780109 + ... + 111780114.

It is an arithmetic number, because the mean of its divisors is an integer number (223560224).

Almost surely, 2^670680669 is an apocalyptic number.

It is an amenable number.

670680669 is a deficient number, since it is larger than the sum of its proper divisors (223560227).

670680669 is a wasteful number, since it uses less digits than its factorization.

670680669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223560226.

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 670680669 is about 25897.5031421950. The cubic root of 670680669 is about 875.3302346426.

The spelling of 670680669 in words is "six hundred seventy million, six hundred eighty thousand, six hundred sixty-nine".