68722990 has 48 divisors (see below), whose sum is σ = 145076400. Its totient is φ = 23369472.

The previous prime is 68722967. The next prime is 68722991. The reversal of 68722990 is 9922786.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68722991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67606 + ... + 68614.

It is an arithmetic number, because the mean of its divisors is an integer number (3022425).

Almost surely, 2^68722990 is an apocalyptic number.

68722990 is an abundant number, since it is smaller than the sum of its proper divisors (76353410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68722990 is a wasteful number, since it uses less digits than its factorization.

68722990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169 (or 1162 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 68722990 is about 8289.9330515994. The cubic root of 68722990 is about 409.6069801095.

The spelling of 68722990 in words is "sixty-eight million, seven hundred twenty-two thousand, nine hundred ninety".