68922557 has 8 divisors (see below), whose sum is σ = 79145760. Its totient is φ = 59358960.

The previous prime is 68922533. The next prime is 68922563. The reversal of 68922557 is 75522986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68922557 - 2⁶ = 68922493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68922577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164678 + ... + 165095.

It is an arithmetic number, because the mean of its divisors is an integer number (9893220).

Almost surely, 2^68922557 is an apocalyptic number.

It is an amenable number.

68922557 is a deficient number, since it is larger than the sum of its proper divisors (10223203).

68922557 is a wasteful number, since it uses less digits than its factorization.

68922557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329803.

The product of its digits is 302400, while the sum is 44.

The square root of 68922557 is about 8301.9610333945. The cubic root of 68922557 is about 410.0030874247.

It can be divided in two parts, 6892 and 2557, that added together give a palindrome (9449).

The spelling of 68922557 in words is "sixty-eight million, nine hundred twenty-two thousand, five hundred fifty-seven".