68251388 has 12 divisors (see below), whose sum is σ = 122353392. Its totient is φ = 33293280.

The previous prime is 68251361. The next prime is 68251399. The reversal of 68251388 is 88315286.

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 207920 + ... + 208247.

It is an arithmetic number, because the mean of its divisors is an integer number (10196116).

Almost surely, 2^68251388 is an apocalyptic number.

It is an amenable number.

68251388 is a deficient number, since it is larger than the sum of its proper divisors (54102004).

68251388 is a wasteful number, since it uses less digits than its factorization.

68251388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416212 (or 416210 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 68251388 is about 8261.4398260836. The cubic root of 68251388 is about 408.6678715996.

The spelling of 68251388 in words is "sixty-eight million, two hundred fifty-one thousand, three hundred eighty-eight".