70545312 has 72 divisors (see below), whose sum is σ = 201444516. Its totient is φ = 23417856.

The previous prime is 70545289. The next prime is 70545323. The reversal of 70545312 is 21354507.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67174416 + 3370896 = 8196^2 + 1836^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114028 + ... + 114644.

Almost surely, 2^70545312 is an apocalyptic number.

70545312 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70545312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100722258).

70545312 is an abundant number, since it is smaller than the sum of its proper divisors (130899204).

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

70545312 is a wasteful number, since it uses less digits than its factorization.

70545312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 70545312 is about 8399.1256687824. The cubic root of 70545312 is about 413.1959469400.

Adding to 70545312 its reverse (21354507), we get a palindrome (91899819).

The spelling of 70545312 in words is "seventy million, five hundred forty-five thousand, three hundred twelve".