68813770 has 16 divisors (see below), whose sum is σ = 123959808. Its totient is φ = 27504400.

The previous prime is 68813761. The next prime is 68813779. The reversal of 68813770 is 7731886.

It is an interprime number because it is at equal distance from previous prime (68813761) and next prime (68813779).

It is a super-2 number, since 2×68813770² = 9470669883225800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68813779) 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, 22047 + ... + 24973.

It is an arithmetic number, because the mean of its divisors is an integer number (7747488).

Almost surely, 2^68813770 is an apocalyptic number.

68813770 is a deficient number, since it is larger than the sum of its proper divisors (55146038).

68813770 is a wasteful number, since it uses less digits than its factorization.

68813770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5285.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 68813770 is about 8295.4065602597. The cubic root of 68813770 is about 409.7872582610.

The spelling of 68813770 in words is "sixty-eight million, eight hundred thirteen thousand, seven hundred seventy".