70564489 has 4 divisors (see below), whose sum is σ = 70592580. Its totient is φ = 70536400.

The previous prime is 70564477. The next prime is 70564547. The reversal of 70564489 is 98446507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98446507 = 17 ⋅5790971.

It can be written as a sum of positive squares in 2 ways, for example, as 44890000 + 25674489 = 6700^2 + 5067^2 .

It is a cyclic number.

It is not a de Polignac number, because 70564489 - 2⁵ = 70564457 is a prime.

It is a super-2 number, since 2×70564489² = 9958694215662242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70564409) 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, 9862 + ... + 15439.

It is an arithmetic number, because the mean of its divisors is an integer number (17648145).

Almost surely, 2^70564489 is an apocalyptic number.

It is an amenable number.

70564489 is a deficient number, since it is larger than the sum of its proper divisors (28091).

70564489 is a wasteful number, since it uses less digits than its factorization.

70564489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28090.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 70564489 is about 8400.2671981313. The cubic root of 70564489 is about 413.2333845365.

It can be divided in two parts, 7056 and 4489, that multiplied together give a square (31674384 = 5628²).

The spelling of 70564489 in words is "seventy million, five hundred sixty-four thousand, four hundred eighty-nine".