670920549 has 8 divisors (see below), whose sum is σ = 963373152. Its totient is φ = 412874160.

The previous prime is 670920527. The next prime is 670920583. The reversal of 670920549 is 945029076.

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

It is not a de Polignac number, because 670920549 - 2⁷ = 670920421 is a prime.

It is a super-2 number, since 2×670920549² = 900268766140922802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 670920549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670920049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8601507 + ... + 8601584.

It is an arithmetic number, because the mean of its divisors is an integer number (120421644).

Almost surely, 2^670920549 is an apocalyptic number.

It is an amenable number.

670920549 is a deficient number, since it is larger than the sum of its proper divisors (292452603).

670920549 is a wasteful number, since it uses less digits than its factorization.

670920549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17203107.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 670920549 is about 25902.1340626598. The cubic root of 670920549 is about 875.4345809671.

The spelling of 670920549 in words is "six hundred seventy million, nine hundred twenty thousand, five hundred forty-nine".