670670181 has 12 divisors (see below), whose sum is σ = 969169708. Its totient is φ = 446917824.

The previous prime is 670670137. The next prime is 670670197. The reversal of 670670181 is 181076076.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 354719556 + 315950625 = 18834^2 + 17775^2 .

It is not a de Polignac number, because 670670181 - 2¹³ = 670661989 is a prime.

It is a super-2 number, since 2×670670181² = 899596983365145522, 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 (670670081) 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 11 ways as a sum of consecutive naturals, for example, 7191 + ... + 37323.

Almost surely, 2^670670181 is an apocalyptic number.

It is an amenable number.

670670181 is a deficient number, since it is larger than the sum of its proper divisors (298499527).

670670181 is a wasteful number, since it uses less digits than its factorization.

670670181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32612 (or 32609 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 670670181 is about 25897.3006508400. The cubic root of 670670181 is about 875.3256718595.

The spelling of 670670181 in words is "six hundred seventy million, six hundred seventy thousand, one hundred eighty-one".