70509224 has 8 divisors (see below), whose sum is σ = 132204810. Its totient is φ = 35254608.

The previous prime is 70509181. The next prime is 70509227. The reversal of 70509224 is 42290507.

It can be written as a sum of positive squares in only one way, i.e., 62568100 + 7941124 = 7910^2 + 2818^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (70509227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4406819 + ... + 4406834.

Almost surely, 2^70509224 is an apocalyptic number.

It is an amenable number.

70509224 is a deficient number, since it is larger than the sum of its proper divisors (61695586).

70509224 is a wasteful number, since it uses less digits than its factorization.

70509224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8813659 (or 8813655 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 70509224 is about 8396.9770751146. The cubic root of 70509224 is about 413.1254770613.

The spelling of 70509224 in words is "seventy million, five hundred nine thousand, two hundred twenty-four".