70345680 has 40 divisors (see below), whose sum is σ = 218072352. Its totient is φ = 18758784.

The previous prime is 70345679. The next prime is 70345687. The reversal of 70345680 is 8654307.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70345687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146314 + ... + 146793.

Almost surely, 2^70345680 is an apocalyptic number.

It is an amenable number.

70345680 is an abundant number, since it is smaller than the sum of its proper divisors (147726672).

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

70345680 is a wasteful number, since it uses less digits than its factorization.

70345680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293123 (or 293117 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 70345680 is about 8387.2331552187. The cubic root of 70345680 is about 412.8058191296.

Adding to 70345680 its reverse (8654307), we get a palindrome (78999987).

The spelling of 70345680 in words is "seventy million, three hundred forty-five thousand, six hundred eighty".