68564620 has 12 divisors (see below), whose sum is σ = 143985744. Its totient is φ = 27425840.

The previous prime is 68564611. The next prime is 68564623. The reversal of 68564620 is 2646586.

It is a super-2 number, since 2×68564620² = 9402214231488800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68564620.

It is not an unprimeable number, because it can be changed into a prime (68564623) 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 3 ways as a sum of consecutive naturals, for example, 1714096 + ... + 1714135.

It is an arithmetic number, because the mean of its divisors is an integer number (11998812).

Almost surely, 2^68564620 is an apocalyptic number.

It is an amenable number.

68564620 is an abundant number, since it is smaller than the sum of its proper divisors (75421124).

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

68564620 is a wasteful number, since it uses less digits than its factorization.

68564620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3428240 (or 3428238 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 68564620 is about 8280.3755953459. The cubic root of 68564620 is about 409.2920959093.

It can be divided in two parts, 6856 and 4620, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 68564620 in words is "sixty-eight million, five hundred sixty-four thousand, six hundred twenty".