68398580 has 24 divisors (see below), whose sum is σ = 145121928. Its totient is φ = 27076608.

The previous prime is 68398579. The next prime is 68398601. The reversal of 68398580 is 8589386.

It can be written as a sum of positive squares in 4 ways, for example, as 71824 + 68326756 = 268^2 + 8266^2 .

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15689 + ... + 19568.

It is an arithmetic number, because the mean of its divisors is an integer number (6046747).

Almost surely, 2^68398580 is an apocalyptic number.

It is an amenable number.

68398580 is an abundant number, since it is smaller than the sum of its proper divisors (76723348).

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

68398580 is a wasteful number, since it uses less digits than its factorization.

68398580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35363 (or 35361 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 68398580 is about 8270.3434027856. The cubic root of 68398580 is about 408.9614404818.

The spelling of 68398580 in words is "sixty-eight million, three hundred ninety-eight thousand, five hundred eighty".