68564380 has 24 divisors (see below), whose sum is σ = 150246432. Its totient is φ = 26233152.

The previous prime is 68564329. The next prime is 68564389. The reversal of 68564380 is 8346586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68564389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74067 + ... + 74986.

It is an arithmetic number, because the mean of its divisors is an integer number (6260268).

Almost surely, 2^68564380 is an apocalyptic number.

It is an amenable number.

68564380 is an abundant number, since it is smaller than the sum of its proper divisors (81682052).

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

68564380 is a wasteful number, since it uses less digits than its factorization.

68564380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149085 (or 149083 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 68564380 is about 8280.3611032370. The cubic root of 68564380 is about 409.2916183539.

It can be divided in two parts, 6856 and 4380, that added together give a square (11236 = 106²).

The spelling of 68564380 in words is "sixty-eight million, five hundred sixty-four thousand, three hundred eighty".