70171668 has 36 divisors (see below), whose sum is σ = 202718880. Its totient is φ = 20048976.

The previous prime is 70171667. The next prime is 70171687. The reversal of 70171668 is 86617107.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70171667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138978 + ... + 139481.

It is an arithmetic number, because the mean of its divisors is an integer number (5631080).

Almost surely, 2^70171668 is an apocalyptic number.

It is an amenable number.

70171668 is an abundant number, since it is smaller than the sum of its proper divisors (132547212).

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

70171668 is a wasteful number, since it uses less digits than its factorization.

70171668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278476 (or 278471 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 70171668 is about 8376.8531084173. The cubic root of 70171668 is about 412.4651562855.

The spelling of 70171668 in words is "seventy million, one hundred seventy-one thousand, six hundred sixty-eight".