70561312 has 24 divisors (see below), whose sum is σ = 139538700. Its totient is φ = 35122944.

The previous prime is 70561303. The next prime is 70561313. The reversal of 70561312 is 21316507.

It can be written as a sum of positive squares in 2 ways, for example, as 47941776 + 22619536 = 6924^2 + 4756^2 .

It is a super-2 number, since 2×70561312² = 9957797502322688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70561313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2514 + ... + 12142.

Almost surely, 2^70561312 is an apocalyptic number.

It is an amenable number.

70561312 is a deficient number, since it is larger than the sum of its proper divisors (68977388).

70561312 is a wasteful number, since it uses less digits than its factorization.

70561312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9868 (or 9860 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 70561312 is about 8400.0780948751. The cubic root of 70561312 is about 413.2271828233.

Adding to 70561312 its reverse (21316507), we get a palindrome (91877819).

The spelling of 70561312 in words is "seventy million, five hundred sixty-one thousand, three hundred twelve".