670612140 has 144 divisors (see below), whose sum is σ = 2234808576. Its totient is φ = 161424000.

The previous prime is 670612109. The next prime is 670612147. The reversal of 670612140 is 41216076.

670612140 is a `hidden beast` number, since 6 + 7 + 0 + 612 + 1 + 40 = 666.

It is not an unprimeable number, because it can be changed into a prime (670612147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 297859 + ... + 300101.

It is an arithmetic number, because the mean of its divisors is an integer number (15519504).

Almost surely, 2^670612140 is an apocalyptic number.

670612140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670612140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1117404288).

670612140 is an abundant number, since it is smaller than the sum of its proper divisors (1564196436).

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

670612140 is a wasteful number, since it uses less digits than its factorization.

670612140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420 (or 2415 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 670612140 is about 25896.1800271778. The cubic root of 670612140 is about 875.3004203800.

The spelling of 670612140 in words is "six hundred seventy million, six hundred twelve thousand, one hundred forty".