68413977 has 12 divisors (see below), whose sum is σ = 102480560. Its totient is φ = 45609156.

The previous prime is 68413973. The next prime is 68413991. The reversal of 68413977 is 77931486.

It is not a de Polignac number, because 68413977 - 2² = 68413973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68413973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140527 + ... + 141012.

Almost surely, 2^68413977 is an apocalyptic number.

It is an amenable number.

68413977 is a deficient number, since it is larger than the sum of its proper divisors (34066583).

68413977 is an equidigital number, since it uses as much as digits as its factorization.

68413977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281554 (or 281542 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 68413977 is about 8271.2742065537. The cubic root of 68413977 is about 408.9921248755.

The spelling of 68413977 in words is "sixty-eight million, four hundred thirteen thousand, nine hundred seventy-seven".