70909216 has 48 divisors (see below), whose sum is σ = 167952960. Its totient is φ = 28788480.

The previous prime is 70909199. The next prime is 70909243. The reversal of 70909216 is 61290907.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4075 + ... + 12586.

It is an arithmetic number, because the mean of its divisors is an integer number (3499020).

Almost surely, 2^70909216 is an apocalyptic number.

70909216 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

70909216 is an abundant number, since it is smaller than the sum of its proper divisors (97043744).

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

70909216 is a wasteful number, since it uses less digits than its factorization.

70909216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16697 (or 16689 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 70909216 is about 8420.7610107401. The cubic root of 70909216 is about 413.9052114045.

The spelling of 70909216 in words is "seventy million, nine hundred nine thousand, two hundred sixteen".