68781258 has 64 divisors (see below), whose sum is σ = 188133120. Its totient is φ = 18138816.

The previous prime is 68781253. The next prime is 68781263. The reversal of 68781258 is 85218786.

It is an interprime number because it is at equal distance from previous prime (68781253) and next prime (68781263).

It is a super-2 number, since 2×68781258² = 9461722904125128, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (68781253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2085 + ... + 11912.

It is an arithmetic number, because the mean of its divisors is an integer number (2939580).

Almost surely, 2^68781258 is an apocalyptic number.

68781258 is an abundant number, since it is smaller than the sum of its proper divisors (119351862).

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

68781258 is a wasteful number, since it uses less digits than its factorization.

68781258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14028 (or 14022 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 68781258 is about 8293.4466900077. The cubic root of 68781258 is about 409.7227115765.

The spelling of 68781258 in words is "sixty-eight million, seven hundred eighty-one thousand, two hundred fifty-eight".