68209977 has 8 divisors (see below), whose sum is σ = 99214560. Its totient is φ = 41339360.

The previous prime is 68209969. The next prime is 68209979. The reversal of 68209977 is 77990286.

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 68209977 - 2³ = 68209969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68209979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1033452 + ... + 1033517.

It is an arithmetic number, because the mean of its divisors is an integer number (12401820).

Almost surely, 2^68209977 is an apocalyptic number.

It is an amenable number.

68209977 is a deficient number, since it is larger than the sum of its proper divisors (31004583).

68209977 is a wasteful number, since it uses less digits than its factorization.

68209977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066983.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 68209977 is about 8258.9331635508. The cubic root of 68209977 is about 408.5852028579.

The spelling of 68209977 in words is "sixty-eight million, two hundred nine thousand, nine hundred seventy-seven".