70171680 has 48 divisors (see below), whose sum is σ = 221042304. Its totient is φ = 18712320.

The previous prime is 70171667. The next prime is 70171687. The reversal of 70171680 is 8617107.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (70171687) 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, 72616 + ... + 73575.

It is an arithmetic number, because the mean of its divisors is an integer number (4605048).

Almost surely, 2^70171680 is an apocalyptic number.

It is an amenable number.

70171680 is an abundant number, since it is smaller than the sum of its proper divisors (150870624).

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

70171680 is a wasteful number, since it uses less digits than its factorization.

70171680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146209 (or 146201 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 30.

The square root of 70171680 is about 8376.8538246767. The cubic root of 70171680 is about 412.4651797973.

Adding to 70171680 its reverse (8617107), we get a palindrome (78788787).

The spelling of 70171680 in words is "seventy million, one hundred seventy-one thousand, six hundred eighty".