670965618 has 16 divisors (see below), whose sum is σ = 1346710176. Its totient is φ = 222858720.

The previous prime is 670965611. The next prime is 670965629. The reversal of 670965618 is 816569076.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (670965611) 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, 197296 + ... + 200667.

It is an arithmetic number, because the mean of its divisors is an integer number (84169386).

Almost surely, 2^670965618 is an apocalyptic number.

670965618 is an abundant number, since it is smaller than the sum of its proper divisors (675744558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670965618 is a wasteful number, since it uses less digits than its factorization.

670965618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398249.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 670965618 is about 25903.0040342814. The cubic root of 670965618 is about 875.4541829293.

It can be divided in two parts, 6709 and 65618, that added together give a palindrome (72327).

The spelling of 670965618 in words is "six hundred seventy million, nine hundred sixty-five thousand, six hundred eighteen".