68609390 has 16 divisors (see below), whose sum is σ = 123688080. Its totient is φ = 27401280.

The previous prime is 68609383. The next prime is 68609459. The reversal of 68609390 is 9390686.

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, 1946 + ... + 11874.

It is an arithmetic number, because the mean of its divisors is an integer number (7730505).

Almost surely, 2^68609390 is an apocalyptic number.

68609390 is a deficient number, since it is larger than the sum of its proper divisors (55078690).

68609390 is a wasteful number, since it uses less digits than its factorization.

68609390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10627.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 68609390 is about 8283.0785339752. The cubic root of 68609390 is about 409.3811604069.

The spelling of 68609390 in words is "sixty-eight million, six hundred nine thousand, three hundred ninety".