670825949 has 8 divisors (see below), whose sum is σ = 675551520. Its totient is φ = 666111600.

The previous prime is 670825943. The next prime is 670825973. The reversal of 670825949 is 949528076.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670825949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 670825897 and 670825906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670825943) 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, 142859 + ... + 147479.

It is an arithmetic number, because the mean of its divisors is an integer number (84443940).

Almost surely, 2^670825949 is an apocalyptic number.

It is an amenable number.

670825949 is a deficient number, since it is larger than the sum of its proper divisors (4725571).

670825949 is a wasteful number, since it uses less digits than its factorization.

670825949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5611.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 670825949 is about 25900.3078939228. The cubic root of 670825949 is about 875.3934335197.

The spelling of 670825949 in words is "six hundred seventy million, eight hundred twenty-five thousand, nine hundred forty-nine".