70147640 has 16 divisors (see below), whose sum is σ = 157832280. Its totient is φ = 28059040.

The previous prime is 70147619. The next prime is 70147643. The reversal of 70147640 is 4674107.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70147643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 876806 + ... + 876885.

Almost surely, 2^70147640 is an apocalyptic number.

It is an amenable number.

70147640 is an abundant number, since it is smaller than the sum of its proper divisors (87684640).

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

70147640 is a wasteful number, since it uses less digits than its factorization.

70147640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753702 (or 1753698 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 70147640 is about 8375.4187954991. The cubic root of 70147640 is about 412.4180724957.

The spelling of 70147640 in words is "seventy million, one hundred forty-seven thousand, six hundred forty".