68180489 has 8 divisors (see below), whose sum is σ = 77744520. Its totient is φ = 59233536.

The previous prime is 68180461. The next prime is 68180509. The reversal of 68180489 is 98408186.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28174864 + 40005625 = 5308^2 + 6325^2 .

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 68180489 - 2¹⁶ = 68114953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68180449) 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, 154034 + ... + 154475.

It is an arithmetic number, because the mean of its divisors is an integer number (9718065).

Almost surely, 2^68180489 is an apocalyptic number.

It is an amenable number.

68180489 is a deficient number, since it is larger than the sum of its proper divisors (9564031).

68180489 is a wasteful number, since it uses less digits than its factorization.

68180489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308539.

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 68180489 is about 8257.1477520994. The cubic root of 68180489 is about 408.5263155923.

The spelling of 68180489 in words is "sixty-eight million, one hundred eighty thousand, four hundred eighty-nine".