68991248 has 20 divisors (see below), whose sum is σ = 134016348. Its totient is φ = 34406400.

The previous prime is 68991239. The next prime is 68991257. The reversal of 68991248 is 84219986.

It is an interprime number because it is at equal distance from previous prime (68991239) and next prime (68991257).

It can be written as a sum of positive squares in 2 ways, for example, as 67108864 + 1882384 = 8192^2 + 1372^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040 + ... + 11792.

Almost surely, 2^68991248 is an apocalyptic number.

It is an amenable number.

68991248 is a deficient number, since it is larger than the sum of its proper divisors (65025100).

68991248 is a wasteful number, since it uses less digits than its factorization.

68991248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11162 (or 11156 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The square root of 68991248 is about 8306.0970377187. The cubic root of 68991248 is about 410.1392507370.

The spelling of 68991248 in words is "sixty-eight million, nine hundred ninety-one thousand, two hundred forty-eight".