68564577 has 8 divisors (see below), whose sum is σ = 91514080. Its totient is φ = 45662400.

The previous prime is 68564533. The next prime is 68564609. The reversal of 68564577 is 77546586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68564577 - 2⁶ = 68564513 is a prime.

It is a super-2 number, since 2×68564577² = 9402202438377858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68564477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8299 + ... + 14352.

It is an arithmetic number, because the mean of its divisors is an integer number (11439260).

Almost surely, 2^68564577 is an apocalyptic number.

It is an amenable number.

68564577 is a deficient number, since it is larger than the sum of its proper divisors (22949503).

68564577 is a wasteful number, since it uses less digits than its factorization.

68564577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23663.

The product of its digits is 1411200, while the sum is 48.

The square root of 68564577 is about 8280.3729988449. The cubic root of 68564577 is about 409.2920103474.

Subtracting 68564577 from its reverse (77546586), we obtain a square (8982009 = 2997²).

The spelling of 68564577 in words is "sixty-eight million, five hundred sixty-four thousand, five hundred seventy-seven".