670149843 has 32 divisors (see below), whose sum is σ = 1049075712. Its totient is φ = 375974400.

The previous prime is 670149841. The next prime is 670149853. The reversal of 670149843 is 348941076.

It is not a de Polignac number, because 670149843 - 2¹ = 670149841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 670149795 and 670149804.

It is not an unprimeable number, because it can be changed into a prime (670149841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24430 + ... + 44012.

It is an arithmetic number, because the mean of its divisors is an integer number (32783616).

Almost surely, 2^670149843 is an apocalyptic number.

670149843 is a deficient number, since it is larger than the sum of its proper divisors (378925869).

670149843 is a wasteful number, since it uses less digits than its factorization.

670149843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19675.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 670149843 is about 25887.2525193385. The cubic root of 670149843 is about 875.0992401182.

The spelling of 670149843 in words is "six hundred seventy million, one hundred forty-nine thousand, eight hundred forty-three".