68989164 has 24 divisors (see below), whose sum is σ = 165326448. Its totient is φ = 22374720.

The previous prime is 68989087. The next prime is 68989169. The reversal of 68989164 is 46198986.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68989169) 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, 77247 + ... + 78134.

It is an arithmetic number, because the mean of its divisors is an integer number (6888602).

Almost surely, 2^68989164 is an apocalyptic number.

It is an amenable number.

68989164 is an abundant number, since it is smaller than the sum of its proper divisors (96337284).

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

68989164 is a wasteful number, since it uses less digits than its factorization.

68989164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155425 (or 155423 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 68989164 is about 8305.9715867561. The cubic root of 68989164 is about 410.1351210402.

The spelling of 68989164 in words is "sixty-eight million, nine hundred eighty-nine thousand, one hundred sixty-four".