70671916 has 72 divisors (see below), whose sum is σ = 153177696. Its totient is φ = 28385280.

The previous prime is 70671901. The next prime is 70671917. The reversal of 70671916 is 61917607.

It is a super-2 number, since 2×70671916² = 9989039422222112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70671917) 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 23 ways as a sum of consecutive naturals, for example, 274860 + ... + 275116.

It is an arithmetic number, because the mean of its divisors is an integer number (2127468).

Almost surely, 2^70671916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70671916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76588848).

70671916 is an abundant number, since it is smaller than the sum of its proper divisors (82505780).

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

70671916 is a wasteful number, since it uses less digits than its factorization.

70671916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 70671916 is about 8406.6590272236. The cubic root of 70671916 is about 413.4429796405.

The spelling of 70671916 in words is "seventy million, six hundred seventy-one thousand, nine hundred sixteen".