70712569 has 4 divisors (see below), whose sum is σ = 71187300. Its totient is φ = 70237840.

The previous prime is 70712567. The next prime is 70712573. The reversal of 70712569 is 96521707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96521707 = 8887 ⋅10861.

It can be written as a sum of positive squares in 2 ways, for example, as 5345344 + 65367225 = 2312^2 + 8085^2 .

It is a cyclic number.

It is not a de Polignac number, because 70712569 - 2¹ = 70712567 is a prime.

It is a super-2 number, since 2×70712569² = 10000534829159522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70712567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237142 + ... + 237439.

It is an arithmetic number, because the mean of its divisors is an integer number (17796825).

Almost surely, 2^70712569 is an apocalyptic number.

It is an amenable number.

70712569 is a deficient number, since it is larger than the sum of its proper divisors (474731).

70712569 is a wasteful number, since it uses less digits than its factorization.

70712569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474730.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 70712569 is about 8409.0765842630. The cubic root of 70712569 is about 413.5222401476.

The spelling of 70712569 in words is "seventy million, seven hundred twelve thousand, five hundred sixty-nine".