68923810 has 8 divisors (see below), whose sum is σ = 124062876. Its totient is φ = 27569520.

The previous prime is 68923769. The next prime is 68923817. The reversal of 68923810 is 1832986.

It can be written as a sum of positive squares in 2 ways, for example, as 68112009 + 811801 = 8253^2 + 901^2 .

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

It is a super-2 number, since 2×68923810² = 9500983169832200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68923810.

It is not an unprimeable number, because it can be changed into a prime (68923817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3446181 + ... + 3446200.

Almost surely, 2^68923810 is an apocalyptic number.

68923810 is a deficient number, since it is larger than the sum of its proper divisors (55139066).

68923810 is a wasteful number, since it uses less digits than its factorization.

68923810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6892388.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 68923810 is about 8302.0364971494. The cubic root of 68923810 is about 410.0055720044.

The spelling of 68923810 in words is "sixty-eight million, nine hundred twenty-three thousand, eight hundred ten".